x² = 37 - 12x² = 25x = ±5
(x-5)² = 125x-5 = ±√125x-5 = ±5√5x = 5±5√5
x(x² - 4) = 0x(x-2)(x+2) = 0x = 0, 2, -2
x² = 37 - 12
x² = 25
x = ±5
(x-5)² = 125
x-5 = ±√125
x-5 = ±5√5
x = 5±5√5
x(x² - 4) = 0
x(x-2)(x+2) = 0
x = 0, 2, -2