Question

Factorise the following questions - ​

Answer 1

iii)

x^2-7x-3x+21

x(x-7)-3(x-7)= (x-3) (x-7)

iv)

y(y^2-9)

Answer 2

Answer:

x^2-10x+21

x^2-3x-7x+21

x(x-3) -7(x-3)

(x-3) (x-7)

Step-by-step explanation:

firstly we made the factors of -10x , then took common after making pairs..