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## AP Board Class 8 Maths Chapter 12 Factorisation InText Questions Textbook Solutions PDF: Download Andhra Pradesh Board STD 8th Maths Chapter 12 Factorisation InText Questions Book Answers

 AP Board Class 8 Maths Chapter 12 Factorisation InText Questions Textbook Solutions PDF: Download Andhra Pradesh Board STD 8th Maths Chapter 12 Factorisation InText Questions Book Answers

## Andhra Pradesh State Board Class 8th Maths Chapter 12 Factorisation InText Questions Books Solutions

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## AP Board Class 8th Maths Chapter 12 Factorisation InText Questions Textbooks Solutions with Answer PDF Download

Find below the list of all AP Board Class 8th Maths Chapter 12 Factorisation InText Questions Textbook Solutions for PDF’s for you to download and prepare for the upcoming exams:

Do this

Question 1.
Express the given numbers in the form of product of primes. [Page No. 267]
(i) 48 (ii) 72 (iii) 96
(i) 48
48 = 2 × 2 × 2 × 2 × 3

ii) 72
72 = 2 × 2 × 2 × 3 × 3

iii) 96
96 = 2 × 2 × 2 × 2 × 2 × 3

Question 2.
Find the factors of following: [Page No. 268]
(i) 8x2yz (ii) 2xy (x + y) (iii) 3x + y3z
i) 8x2yz = 2 × 2 × 2 × x × x × y × z
ii) 2xy (x + y) = 2 × x × y × (x + y)
iii) 3x + y3z = (3 × x) + (y × y × y × z)

Question 3.
Factorise: [Page No. 270]
(i) 9a2 – 6a
(ii) 15a3b – 35ab3
(iii) 7lm – 21lmn
(i) 9a2 – 6a = 3 × 3 × a × a – 2 × 3 × a
= 3 × a (3a – 2)
∴ 9a2 – 6a = 3a (3a – 2)

ii) 15a3b – 35ab3
= 3 × 5 × a × a × a × b – 7 × 5 × a × b × b × b
= 5 × a × b [3 × a × a – 7 × b × b]
= 5ab [3a2 – 7b2]

iii) 7lm – 21lmn
= 7 × l × m – 7 × 3 × m × n × l
= 7 × l × m [1 – 3n]
= 7lm [1 – 3n]

Question 4.
Factorise:
i) 5xy + 5x + 4y + 4
ii) 3ab + 3a + 2b + 2 [Pg. No. 271]
i) 5xy + 5x + 4y + 4
= (5xy + 5x) + (4y + 4)
= 5x(y + 1) + 4(y + 1)
= (y + 1) (5x + 4)

ii) 3ab + 3a + 2b + 2
= [3 × a × b + 3 × a] + [2 × b + 2]
= 3 × a [b + 1] + 2 [b + 1]
= (b + 1) (3a + 2)

Think, Discuss and Write

While solving some problems containing algebraic expressions in different operations, some students solved as given below. Gan you identify the errors made by them? Write correct answers. [Page No. 279]
Question 1.
Srilekha solved the given equation as shown below.
3x + 4x + x + 2x = 90
9x = 90 Therefore x = 10 What could say about the correctness of the solution?
Can you identify where Srilekha has gone wrong?
Srilekha’s solution is wrong,
∵ 3x + 4x + x + 2x = 90
10x = 90
x = 9010
∴ x = 9

Question 2.
Abraham did the following. [Page No. 280]
For x = -4, 7x = 7 – 4 = -3.
Abraham’s solution is wrong.
∴ If x = -4
⇒ 7x = 7(-4) = -28

Question 3.
John and Reshma have done the multiplication of an algebraic expression by the following methods: verify whose multiplication is correct. [Page No. 280]

∴ John’s solutions are wrong and Reshma’s solutions are correct.

Question 4.
Harmeet does the division as (a + 5) ÷ 5 = a + 1 His friend Srikar done the same (a + 5) ÷ 5 = a/5 + 1 and his friend Rosy did it this way (a + 5) ÷ 5 = a Can you guess who has done it correctly? Justify! [Page No. 280]
The solutions of Harmeet, Rosy are wrong.
(a + 5) ÷ 5 = 𝑎+55
= 𝑎5 + 55
= (𝑎5+1)
∴ Srikar had done it correctly.

## Andhra Pradesh Board Class 8th Maths Chapter 12 Factorisation InText Questions Textbooks for Exam Preparations

Andhra Pradesh Board Class 8th Maths Chapter 12 Factorisation InText Questions Textbook Solutions can be of great help in your Andhra Pradesh Board Class 8th Maths Chapter 12 Factorisation InText Questions exam preparation. The AP Board STD 8th Maths Chapter 12 Factorisation InText Questions Textbooks study material, used with the English medium textbooks, can help you complete the entire Class 8th Maths Chapter 12 Factorisation InText Questions Books State Board syllabus with maximum efficiency.

## FAQs Regarding Andhra Pradesh Board Class 8th Maths Chapter 12 Factorisation InText Questions Textbook Solutions

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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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