Question

find the value (×+8)(×+7)​

Answer 1

Answer:

$= (x + 8)(x + 7) \\ = {(x)}^{2} + x(8 + 7) + (8)(7) \\ = {x}^{2} + 14x + 56$

Answer 2

Answer:

x^2+15x+56

Step-by-step explanation:

(x+8)(x+7)

=x(x+7)+8(x+7)

=x^2+7x+8x+56

=x^2+15x+56

if we factorise x^2+15x+56 we will find out the x value also

x^2+7x+8x+56=0

if we take x as common

x(x+7)+8(x+7)=0

(x+7)(x+8)=0

x+7=0,x+8=0

x=-7,x=-8

therefore,x=-7,-8

I also found the value of x

but you want the value of (x+8)(x+7) is x^2+15x+56