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AP Board Class 7 Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbook Solutions PDF: Download Andhra Pradesh Board STD 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Book Answers

AP Board Class 7 Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbook Solutions PDF: Download Andhra Pradesh Board STD 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Book Answers
AP Board Class 7 Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbook Solutions PDF: Download Andhra Pradesh Board STD 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Book Answers


AP Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbooks Solutions and answers for students are now available in pdf format. Andhra Pradesh Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Book answers and solutions are one of the most important study materials for any student. The Andhra Pradesh State Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 books are published by the Andhra Pradesh Board Publishers. These Andhra Pradesh Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 textbooks are prepared by a group of expert faculty members. Students can download these AP Board STD 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 book solutions pdf online from this page.

Andhra Pradesh Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbooks Solutions PDF

Andhra Pradesh State Board STD 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Books Solutions with Answers are prepared and published by the Andhra Pradesh Board Publishers. It is an autonomous organization to advise and assist qualitative improvements in school education. If you are in search of AP Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Books Answers Solutions, then you are in the right place. Here is a complete hub of Andhra Pradesh State Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 solutions that are available here for free PDF downloads to help students for their adequate preparation. You can find all the subjects of Andhra Pradesh Board STD 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbooks. These Andhra Pradesh State Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbooks Solutions English PDF will be helpful for effective education, and a maximum number of questions in exams are chosen from Andhra Pradesh Board.

Andhra Pradesh State Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Books Solutions

Board AP Board
Materials Textbook Solutions/Guide
Format DOC/PDF
Class 7th
Subject Maths
Chapters Maths Chapter 9 Algebraic Expressions Ex 9.4
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AP Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbooks Solutions with Answer PDF Download

Find below the list of all AP Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbook Solutions for PDF’s for you to download and prepare for the upcoming exams:

Question 1.
Find the value of the expression
2x2 – 4x + 5 when
(i) x = 1
(ii) x = – 2
(iii) x = 0.
Answer:
Given expression is 2x2 – 4x + 5

(i) When x = 1, then
= 2(1)2 – 4(1) + 5
= 2 × 1 – 4 + 5
= 2 – 4 + 5 = 3
When x = 1, then 2x2 – 4x + 5 = 3

(ii) When x = – 2, then
= 2(- 2)2 – 4(- 2) + 5
= 2(4) + 8 + 5
= 8 + 8 + 5 = 21
When x = – 2, then 2x2 – 4x + 5 = 21

(iii) When x = 0, then
= 2(0)2 – 4(0) + 5
= 2(0) – 0 + 5
= 0 – 0 + 5 = 5
When x = 0, then 2x2 – 4x + 5 = 5

Question 2.
Find the value of Expressions when m = 2, n = – 1.
(i) 2m + 2n
Answer:
Given expression is 2m + 2n
If m = 2, n = – 1, then
2m + 2n = 2(2) + 2(- 1) = 4 – 2 = 2
∴ If m = 2, n = – 1, then 2m + 2n = 2

(ii) 3m – n
Answer:
Given expression is 3m – n
If m = 2, n = – 1, then
3m – n = 3(2) -(-1) = 6 + 1 = 7
∴ If m = 2, n = – 1, then 3m – n = 7

(iii) mn – 2.
Answer:
Given expression is mn – 2
If m = 2, n = – 1, then
mn – 2 = 2 × (-1)-2
= – 2 – 2 = – 4
∴ If m = 2, n = – 1, then mn – 2 = – 4

Question 3.
Simplify and find the value of the expression 5x2 – 4 – 3x2 + 6x + 8 + 5x – 13 when x = – 2.
Answer:
Given expression is
5x2 – 4 – 3x2 + 6x + 8 + 5x – 13
= (5x2 – 3x2) + (6x + 5x) + (-4 + 8 – 13)
= (5 – 3)x2 + (6 + 5)x + (- 9)
= 2x2 + 11x – 9
If x = – 2, then 2x2 + 11x – 9
= 2(- 2)2 + 11 (- 2) – 9
= 2(4) – 22 – 9
= 8 – 22 – 9
∴ If x = – 2, then 2x2 + 11x – 9 = – 23

Question 4.
Find the length of the line segment PQ when a = 3 cm.

Answer:
From the figure,
Given PR = 3a and RQ = 2a
PQ = PR + RQ
= 3a + 2a
= (3 + 2)a
PQ = 5a
If a = 3 cm, then PQ = 5(3)
∴ PQ = 15 cm

Question 5.
The area of a square field of side ‘s’ meters is s2 sq. m. Find the area of square field, when
(i) s = 5m
(ii) s =12m
(iii) s = 6.5m

Answer:
From the figure,
Area of square = s2 sq.m.
(i) If s = 5m, then
s2 = (5)2 = 5 × 5 = 25 sq.m

(ii) If s = 12 m, then
s2 = (12)2 = 12 × 12 = 144 sq.m

(iii) If s = 6.5m, then
s2 = (6.5)2 = 6.5 × 6.5 = 42.25 sq.m

Question 6.
The area of triangle is given by 12 ∙ b ∙ h and if b = 12 cm, h = 8 cm, then find the area of triangle.
Answer:
Given area of the triangle = 12 ∙ b ∙ h
If b = 12 cm, h = 8 cm

= 6 × 8 = 48 sq.cm.

Question 7.
Simple interest is given by I =  PTR 100, If P = ₹ 900, T = 2 years and R = 5%, then find the simple interest.
Answer:
Given simple interest I =  PTR 100
If P = ₹ 900, T= 2 and R = 5% then

= 9 × 2 × 5 = 90

Question 8.
Find the errors and correct them in the following:
The value of following when a = – 3.
(i) 3 – a = 3 – 3 = 0
Answer:
3 – a = 3 – (- 3) (when a = – 3)
= 3 + 3 = 6
(Error is – (- 3) = – 3)

(ii) a2 + 3a = (- 3)2 + 3(- 3) = 9 + 0 = 9
Answer:
a2 + 3a = (- 3)2 + 3(- 3) (when a = – 3)
= (- 3 × – 3) – 9
(Error is 3(- 3) = 0)
= 9 – 9 = 0

(iii) a2 – a – 6 = (- 3)2 – (- 3) – 6 = 9 – 3 – 6 = 0
Answer:
a2 – a – 6
= (- 3)2 – (- 3) – 6 (when a = – 3)
= (- 3 × – 3) + 3 – 6
(Error is – (- 3) = – 3)
= 9 + 3 – 6
= 12 – 6 = 6

(iv) a2 + 4a + 4 = (- 3)2 + 4(-3) + 4 = 9 + 1 + 4 = 14
Answer:
a2 + 4a + 4
= (- 3)2 + 4(- 3) + 4 (when a = – 3)
= (- 3 × – 3)- 12 + 4
(Error is 4 (- 3) = 1)
= 9 – 12 + 4 = 13 – 12 = 1

(v) a3 – a2 – 3 = (- 3)3 – (-3)2 – 3 = – 9 + 6 – 3 = – 6
Answer:
a3 – a2 – 3
= (- 3)3 – (- 3)2 – 3 (when a = – 3)
= (- 3 × – 3 × – 3) – (- 3 × – 3) – 3
= – 27 – (9) – 3
(Error is (- 3)3 = – 9 and (- 3)2 = 6)
= – 27 – 9 – 3 = – 39


AP Board Textbook Solutions PDF for Class 7th Maths


Andhra Pradesh Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbooks for Exam Preparations

Andhra Pradesh Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbook Solutions can be of great help in your Andhra Pradesh Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 exam preparation. The AP Board STD 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbooks study material, used with the English medium textbooks, can help you complete the entire Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Books State Board syllabus with maximum efficiency.

FAQs Regarding Andhra Pradesh Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbook Solutions


How to get AP Board Class 7th Maths Chapter 9 Algebraic Expressions Ex 9.4 Textbook Answers??

Students can download the Andhra Pradesh Board Class 7 Maths Chapter 9 Algebraic Expressions Ex 9.4 Answers PDF from the links provided above.

Can we get a Andhra Pradesh State Board Book PDF for all Classes?

Yes you can get Andhra Pradesh Board Text Book PDF for all classes using the links provided in the above article.

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