Задача Задача №129874
А
А
(3x)² = 9x² (-2x-1)² = 4x² + 4x + 1 (-3+5x)² = 9 - 30x + 25x² (x+1)²-1 = x² + 2x + 1 - 1 = x² + 2x 4x²-0,5 is not a perfect square trinomial (x²-3x-1)² = x⁴ - 6x³ + 10x² - 6x + 1 -3×(4x+5)² = -3(16x² + 40x + 25) = -48x² - 120x - 75
