Question

- x$x^{2}$ = 5х -36

Answer 1

-x^2 = 5x - 36
-x^2 - 5x + 36 = 0
x^2 + 5x - 36 = 0
x = -5±√5^2-4•1•(-36) / 2•1
x = -5±√25 + 144 / 2
x = -5±√169 / 2
x = -5±13 /2
x1 = -9
x2 = 4