2x的3次方-3x+1怎么化简

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2x的3次方-3x+1怎么化简2x的3次方-3x+1怎么化简2x的3次方-3x+1怎么化简2X^3-3X+1=2X^3-2-3X+1+2=2(X^3-1)-3X+3=2(X^3-1)-3(X-1)=2

2x的3次方-3x+1怎么化简
2x的3次方-3x+1怎么化简

2x的3次方-3x+1怎么化简
2X^3-3X+1
=2X^3-2-3X+1+2
=2(X^3-1)-3X+3
=2(X^3-1)-3(X-1)
=2(X-1)(X^2+X+1)-3(X-1)
=(X-1)(2(X^2+X+1)-3)
=(X-1)(2X^2+2X+2-3)
=(X-1)(2X^2+2X-1)