Решите 1.(2x^3-3x+1)+(-x^3-2x-1) 2. (2x^3-3x+1)-(-x^3-2x-1)

Question

Решите
1.(2x^3-3x+1)+(-x^3-2x-1)
2. (2x^3-3x+1)-(-x^3-2x-1)

Answer 1

1) 2x³-3x+1-x³-2x-1=x³-5x=x(x²-5)
2) 2x³-3x+1+x³+2x+1=3x³-x+2

Answer 2

1) 2x³-3x+1-x³-2x-1=x³-5x

2)2x³-3x+1+x³+2x+1=3x³-x+2