Question

Factorise the following quadratic polynomials by splitting the middle term:
i. x2+10x+21
ii. 10t2–7t+1
iii. 15t2–2t–1
iv. 2x2–7x–15 v. x2+9x+18

Pls answer fastttt

Answer 1

answers of all the questions.

Answer 2

Answer:

1.x2+10x+21

x2+7x+3x+21

x(x+7)+3(x+7)

(x+3)(x+7)

2.10t2-7t+1

10t2-5t-2t+1

5t(2t-1)-1(2t-1)

(5t-1)(2t-1)

3.15t2-2t-1

15t2-3t+5t-1

3t(5t-1)+1(5t-1)

(3t+1)(5t-1)

4.2x2-7x-15

2x2-10x+3x-15

2x(x-5)+3(x-5)

(2x+3)(x-5)

5.x2+9x+18

x2+6x+3x+18

x(x+6)+3(x+6)

(x+3)(x+6)

Hope uu will find it beneficial