2x的3次方-3x+1怎么化简
问题描述:
2x的3次方-3x+1怎么化简
答
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)