Explicație pas cu pas:
1 ) - x ^2 - 8x + 5
2 ) - x^3 - 3x - 2
a)11x²-3x+4-5x+1-12x²=
(11x²-12x²)+(-3x-5x)+(4+1)=
-x²-8x+5
b)3x³-x²+4-5x-4x³+x²-6+2x=
(3x³-4x³)+(-x²+x²)+(4-6)+(-5x+2x)=
-x³-2-3x
