Question

Me ajudem nessa questao.

Answer 1

x² - 6x + 9 = - 2x²

x² + 2x² - 6x + 9 =0

3x² - 6x + 9 = 0 ( : 3 )

x² - 2x + 3 = 0

x = 2 + -√4 - 3

x' = 2 + 1  → x' = 3

x" = 2 - 1  → x" = 1

Answer 2

(x - 3)² = -2x²

x² - 9 = -2x²
x² + 2x² = 9
3x² = 9
x² = 9/3
x² = 3
x = ± √3