1) (5x+2)² = 25x² + 20x + 2) (1/3a²-1/9)² = 1/9a⁴ - 2/27a² + 1/83) (x-5y)² - (2x+y)² = x² - 10xy + 25y² - 4x² - 4xy - y² = -3x² - 14xy + 24y4) (4x-3)² = 16x² - 24x + 5) (1/3a²+1/5)² = 1/9a⁴ + 2/15a² + 1/26) (5x+y)² - (x-2y)² = 25x² + 10xy + y² - x² + 4xy - 4y² = 24x² + 14xy - 3y²
1) (5x+2)² = 25x² + 20x +
2) (1/3a²-1/9)² = 1/9a⁴ - 2/27a² + 1/8
3) (x-5y)² - (2x+y)² = x² - 10xy + 25y² - 4x² - 4xy - y² = -3x² - 14xy + 24y
4) (4x-3)² = 16x² - 24x +
5) (1/3a²+1/5)² = 1/9a⁴ + 2/15a² + 1/2
6) (5x+y)² - (x-2y)² = 25x² + 10xy + y² - x² + 4xy - 4y² = 24x² + 14xy - 3y²