Question

Quanto e (4x ai cubo+ 2x - x ) - (4x-x-x)

Answer 1

(4x^3+2x - x ) - (4x-x-x)

4x^3+2x-x-4x+x+x

4x^3+2x-x-2x

4x^3-x

x(4x^2-1)=0

x1=0

4x^2-1=0

4x^2=1

x^2=1/4

x=raiz(1/4)

x=(1/2,-1/2)

assim o conjunto solução sera x={-1/2,0,1/2}