Divide both sides of the equation by x:
x2 = 9x
x2 / x = 9x / x
x = 9
Chat with our AI personalities
x - x2 - 9x + 14 = 0 ; whence, x2 + 8x = 14 , x2 + 8x + 16 = 30 , and x + 4 = ±√30 . Therefore, x = ±√30 - 4 .
2y - 9x = 14 2y = 14 + 9x y = (14 + 9x) / 2
x = -3
x2-9x = x(x-9)
x: x2 - 81 = 0