Question

x3+3x2−x ;4x3+2x2−x и 5x2−3x3+4x

Answer 1

1. x+3+3x2-x
3x+6x-x
равно 8x
2.4x3+2x2-x
12x+4x-x
равно 15x
3.5x2-3x3+4x
10x-9x+4x
равно 5x