Question

.......................решите

Answer 1

1) x=1/2
(x+3)(x^2-3x+9)=x^3+27=1/2^3+27=27.125
2)(x^6-x^4)/(x^3+x^2)=(x^3-x^2)(x^3+x^2)/(x^3+x^2)=x^3-x^2