Question

solve the following equation; (x+4)^2 - (x-5)^2 = 9

Answer 1

here is your answer

Answer 2

(x^2+16+8x) - (x^2-10x+25)=9
16+8x + 10x - 25 = 9
18x = 9 + 9
18x =18
x=1