Question

Resolva a equação do 2° grau:
x^2+(x-3)^2=(x+3)^2

Answer 1

x^2+(x-3)^2=(x+3)^2

x² + (x - 3)² = (x + 3)²

x² + x² - 2.3x + 9 = x² + 2.3x + 9

2x² - 6x + 9 = x² + 6x + 9

2x² - x² - 6x - 6x = 9 - 9

x² - 12x = 0

x.(x - 12) = 0

x = 0

x - 12 = 0

x = 12

R.: x = 0 e x = 12