计算:(3x3+10x2+13x-27)÷(x2+2x-3)

问题描述:

计算:(3x3+10x2+13x-27)÷(x2+2x-3)

(3x3+10x2+13x-27)÷(x2+2x-3)
=

3x3+10x2+13x−27
x2+2x−3

第一步商3x,
除下来为4x2+22x-27,
再商4,
余14x-15.
∴(3x3+10x2+13x-27)÷(x2+2x-3)是商3x+4余14x-15.