Question

(x+4)(x+5)=56
find value of x​

Answer 1

Answer:

...................

Answer 2

Answer:

x^2+5x+4x+20

x^2+9x+20

x^2+4x+5x+20

x(x+4)+5(x+4)

(x+4)+(x+5)

x=-4, x=-5