Question

simplifique as expressões abaixo

a)(2x^2y)^3 ÷ (4x^3y^3)+5x^2(-2x)+x^3

b)2x(x^2-3x+1)-3x(-2+x)

Answer 1

a)

(2x²y)³ ÷ (4x³y³)+5x²(-2x)+x²

2³x⁶y³ ÷ (4x³y³)+5x²(-2x)+x²

8x⁶y³ ÷ (4x³y³)-10x³+x²

2x³ -10x³+x² =-8x³+x²

b)

2x(x²-3x+1)-3x(-2+x)

2x³-6x²+2x+6x-3x²

=2x³-9x²+8x