Question

-2x(3x3-x2)= 3x(x4-4x2+3x-5)= 5x(x4-5x2+2x-6)= 4(2x3+5x2+2x-7)=

Answer 1

Respuesta:

-2x(3x3-x2)= -2x × (9-2x) = -18x + 4x²

3x(x4-4x2+3x-5)= -3x² - 15x

5x(x4-5x2+2x-6)= -20x² -30x

4(2x3+5x2+2x-7)= 72x-28.