Question

calcule os produtos. a) 2x•(3x²-4x) b)-3x•(2x²-3x-1) c)2/5x•(1/4x-1/2)

Answer 1

a) 2x.(3x²-4x) = 6x³ - 8x²

b)-3x.(2x²-3x-1) = -6x³ + 9x² + 3x

c) 2/5x.(1/4x -1/2) = 2/20x² - 2/10x ou 1/10x² - 1/5x