Chodzi o przykłady, tak? a ) (a+b)² = a² + 2ab + b² (2x + 7)² = 4x² + 28x + 49 (k² + 1)² = [latex] k^{4} + 2 k^{2} +1[/latex] (7 + l)² = 49 + 14l + l² (xy + y)² = x²y² + 2xy² + y² (x²y + 1)² = [latex] x^{4} y^{2} + 2 x^{2} y + 1[/latex] (x + 2y)² = x² + 4xy + 4y² (4k + 4kl)² = 16k² + 32k²l + 16k²l² b) (a-b)² = a² - 2ab + b² (2x - 7)² = 4x² - 28x + 49 (k² - 1)² = [latex] k^{4} - 2 k^{2} +1[/latex] (7 - l)² = 49 - 14l + l² (xy - y)² = x²y² - 2xy² + y² (x²y - 1)² = [latex] x^{4} y^{2} - 2 x^{2} y + 1[/latex] (x - 2y)² = x² - 4xy + 4y² (4k - 4kl)² = 16k² - 32k²l + 16k²l² c) a² - 4 = (a-2)(a+2) a²x² - 9 = (ax-3)(ax+3) [latex] x^{9} - 81[/latex] = (x³+9)(x³-9) w²z²o²r² - d²w²a² = (wzor + dwa)(wzor - dwa) h² - 1/4 = (h - 1/2)(h + 1/2) u² - 3 = (u - √3)(u + √3) 1² - k² = (1 - k)(1 + k) 7² - q² = (7 - q)(7 + q)
