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 Board Class 8th Maths Chapter 12 Factorisation InText Questions Textbooks Solutions PDF

Andhra Pradesh State Board STD 8th Maths Chapter 12 Factorisation InText Questions 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 8th Maths Chapter 12 Factorisation InText Questions Books Answers Solutions, then you are in the right place. Here is a complete hub of Andhra Pradesh State Board Class 8th Maths Chapter 12 Factorisation InText Questions 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 8th Maths Chapter 12 Factorisation InText Questions Textbooks. These Andhra Pradesh State Board Class 8th Maths Chapter 12 Factorisation InText Questions 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 8th Maths Chapter 12 Factorisation InText Questions Books Solutions

Board | AP Board |

Materials | Textbook Solutions/Guide |

Format | DOC/PDF |

Class | 8th |

Subject | Maths |

Chapters | Maths Chapter 12 Factorisation InText Questions |

Provider | Hsslive |

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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

Answer:

48 = 2 × 2 × 2 × 2 × 3

ii) 72

Answer:

72 = 2 × 2 × 2 × 3 × 3

iii) 96

Answer:

96 = 2 × 2 × 2 × 2 × 2 × 3

Question 2.

Find the factors of following: [Page No. 268]

(i) 8x^{2}yz (ii) 2xy (x + y) (iii) 3x + y^{3}z

Answer:

i) 8x^{2}yz = 2 × 2 × 2 × x × x × y × z

ii) 2xy (x + y) = 2 × x × y × (x + y)

iii) 3x + y^{3}z = (3 × x) + (y × y × y × z)

Question 3.

Factorise: [Page No. 270]

(i) 9a^{2} – 6a

(ii) 15a^{3}b – 35ab^{3}

(iii) 7lm – 21lmn

Answer:

(i) 9a^{2} – 6a = 3 × 3 × a × a – 2 × 3 × a

= 3 × a (3a – 2)

∴ 9a^{2} – 6a = 3a (3a – 2)

ii) 15a^{3}b – 35ab^{3}

= 3 × 5 × a × a × a × b – 7 × 5 × a × b × b × b

= 5 × a × b [3 × a × a – 7 × b × b]

= 5ab [3a^{2} – 7b^{2}]

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]

Answer:

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?

Answer:

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.

Answer:

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]

Answer:

∴ 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]

Answer:

The solutions of Harmeet, Rosy are wrong.

(a + 5) ÷ 5 = 𝑎+55

= 𝑎5 + 55

= (𝑎5+1)

∴ Srikar had done it correctly.

## AP Board Textbook Solutions PDF for Class 8th Maths

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