Question

efetue cada multiplicacao 3ab ( 2a+4b) , (2x+y)3x² , -y.(y²-2y) , 3(2x³-x³+2x+1)
calculos tbm rapaziada pls

Answer 1

Resposta:

1) 6a²b + 12ab².

2) -y³ + 2y²

3) 3x³ + 6x + 3;

Explicação passo-a-passo:

1)  3ab (2a + 4b) = (3ab  * 2a) + (3ab * 4b) = 6a²b + 12ab².

2)  -y (y² - 2y) = (-y * y²) - (-y * 2y) = -y³ + 2y²

3)  3(2x³-x³+2x+1) = ( 3 * 2x³ ) - ( 3 * x³ ) + (3 * 2x ) + (3 * 1) = 6x³ - 3x³ + 6x +3 =

= 3x³ + 6x + 3;