A) (x-4)² - 36 = (x-4+6)(x-4-6) = (x+2)(x-10)Б) 4x² - (2x-1)² = 4x² - (4x² - 4x + 1) = 4x² - 4x² + 4x - 1 = 4x - 1В) 225x² - 30x + 1 = (15x - 1)²Г) 0,25у⁶ + 2у³ + 4 = (0,5y³+2)(0,5y³+2)Д) 15xу² - 24x³у = 3x(5y² - 8x²у)Е) x²у⁸ - 2x⁴у + 12x³у⁶ = x²(y⁶ - 2x²y + 12x⁴y⁵)
A) x² + 10x + 25 = (x+5)² = 0 => x+5 = 0 => x = -5Б) 49у² - 42x + 9 = (7у-3)² = 0 => 7у-3 = 0 => y = 3/7В) 2у² + 98 = 0 => 2у² = -98 => у² = -49 => y = ±√(-49) => у = ±7i
A) (x-4)² - 36 = (x-4+6)(x-4-6) = (x+2)(x-10)
Б) 4x² - (2x-1)² = 4x² - (4x² - 4x + 1) = 4x² - 4x² + 4x - 1 = 4x - 1
В) 225x² - 30x + 1 = (15x - 1)²
Г) 0,25у⁶ + 2у³ + 4 = (0,5y³+2)(0,5y³+2)
Д) 15xу² - 24x³у = 3x(5y² - 8x²у)
Е) x²у⁸ - 2x⁴у + 12x³у⁶ = x²(y⁶ - 2x²y + 12x⁴y⁵)
A) x² + 10x + 25 = (x+5)² = 0 => x+5 = 0 => x = -5
Б) 49у² - 42x + 9 = (7у-3)² = 0 => 7у-3 = 0 => y = 3/7
В) 2у² + 98 = 0 => 2у² = -98 => у² = -49 => y = ±√(-49) => у = ±7i