Question

(x-2)ao quadrado=4-9x

Answer 1

(x - 2)² = 4 - 9x
(x - 2).(x - 2) = 4 - 9x
x² - 2x - 2x + 4 = 4 - 9x
x² - 4x + 4 = 4 - 9x
x² - 4x + 9x + 4 - 4 = 0
x² + 5x + 0 = 0
x² + 5x = 0
x(x + 5) = 0

x = 0

ou
x + 5 = 0
x = - 5