Question

Va rog sa-mi rezolvati si mie urmatoarea expresie:
E(x)=x^3+(x+1)^2+2(x-3)(x+3)+17.

Answer 1

E(x)=x³+(x+1)²+2(x-3)(x+3)+17
E(x)=x³+x²+2x+1+2(x²-9)+17
E(x)=x³+x²+2x+1+2x²-18+17
E(x)=x³+3x²+2x
E(x)=x³+x²+2x²+2x
E(x)=x²(x+1)+2x(x+1)
E(x)=(x+1)(x²+2x)
E(x)=x(x+1)(x+2)