来自廖庆斌的问题
whenx3+3x2-2x+7isdividedbyx+1,theremainderis.
whenx3+3x2-2x+7isdividedbyx+1,theremainderis.


whenx3+3x2-2x+7isdividedbyx+1,theremainderis.
whenx3+3x2-2x+7isdividedbyx+1,theremainderis.
余数是11.
用多项式除法得出:x^3+3x^2-2x+7=(x+1)(x^2+2x-4)+11