а) x² + 2x² = 03x² = 0x² = 0x = 0
б) (x-6)² + 2x(x-6) = 0x² - 12x + 36 + 2x² - 12x = 03x² - 24x + 36 = 0x² - 8x + 12 = 0(x - 6)(x - 2) = 0x = 6, x = 2
в) x³ - 3x² = 0x²(x - 3) = 0x² = 0, x - 3 = 0x = 0, x = 3
г) (x + 4)² - 3x(x + 4) = 0x² + 8x + 16 - 3x² - 12x = 0-x² - 4x + 16 = 0x² + 4x - 16 = 0(x + 8)(x - 2) = 0x = -8, x = 2
а) x² + 2x² = 0
3x² = 0
x² = 0
x = 0
б) (x-6)² + 2x(x-6) = 0
x² - 12x + 36 + 2x² - 12x = 0
3x² - 24x + 36 = 0
x² - 8x + 12 = 0
(x - 6)(x - 2) = 0
x = 6, x = 2
в) x³ - 3x² = 0
x²(x - 3) = 0
x² = 0, x - 3 = 0
x = 0, x = 3
г) (x + 4)² - 3x(x + 4) = 0
x² + 8x + 16 - 3x² - 12x = 0
-x² - 4x + 16 = 0
x² + 4x - 16 = 0
(x + 8)(x - 2) = 0
x = -8, x = 2