Question

When the square of a certain number is diminished by 9times the number the result is 36.Find the number.

Answer 1

x\[x^2-9x^2=36\]

Answer 2

x^2 -9x=36

Answer 3

is x=12

Answer 4

it would be
x^2 -9x = 36
x^2 -9x -36=0
(x-12)(x+3) = 0

Answer 5

Thanks ;D