Question

Va rog vreau rezolvarea si explicatii !!!
1. x³-16x=
2.x³+x²+x+1=
3.x³+2x²-16(x+2)=
4.x²+3x+2=

Answer 1

a) x³-16x=x(x²-16)=x(x-4)(x+4)

b) x³+x²+x+1=x²(x+1)+x+1=(x²+1)(x+1)

c) x³+2x²+16(x+2)=x²(x+2)+16(x+2)=(x²+16)(x+2)

d) x²+3x+2=x²+2x+x+2=x(x+2)+x+2=(x+1)(x+2)

bafta!!!!