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(x + 5)² = x² + 10x + 25

(x - 4)² = x² - 8x + 16

(3x + 1)² = 9x² + 6x + 1

(4x - 2)² = 16x² - 16x + 4

(x + 3)*(x - 3) = x² - 9

(2x + 3)*(x + 2) = 2x² + 7x + 6

(x + 2)³ = x³ + 6x² + 12x + 8

(x + 3)³ = x³ + 9x² + 27x + 27