Question

efetue
a)
$(6x {}^{3} + 4x {}^{2} + 2x) + ( - 2x {}^{3} + x {}^{2} ) =$
b)
$(9x {}^{3} - x {}^{2} + 2) - (x {}^{3} - x {}^{2} ) =$
c)
$(18x {}^{3} - 12x {}^{2} + 6x) \div ( - 6x) =$
d)
$(x - 2) \times (3x {}^{2} - x + 5) =$
​

Answer 1

Resposta:

Explicação passo a passo:

a.

6x³-2x³+4x²+x²+2x=

4x³+5x²+2x

b.

9x³-x³-x²-x²+2=

8x³+2

c.

18x³:-6x=-3x²

-12x²:-6x=2x

+6x:-6x=-1

-3x²+2x-1

d.

(x-2)(3x²-x+5)=

3x³-x²+5-6x²+2x-10=

3x³-7x²+2x-5