Question

x²- a²+x- 7a-12 factorise​

Answer 1

Answer:

• I hope u understand the solution ☺️

Answer 2

Answer:

(x+a+4) (x-a-3)

Step-by-step explanation:

x²- a²+x- 7a-12

=(x*x) - (a*a) + (4x - 3x) + (- 4a - 3a) - (3*4)

= (x*x) - (a*a) + (4x - 3x) + (- 4a - 3a) - (3*4) + ax - ax    ( to get 9 terms & ax )

= (x*x) + 4x + ax - (a*a) - 4a - ax + ( - 3x) + ( - 3a) - (3*4)  

= x(x+4+a) -a (a+4+x) -3 (x+a+4)

= (x+a+4) (x-a-3)