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分解因式(2X²-3X+1)²-22X²+33X-1 (x+y-2XY)(x+y-2)+(xy-1)^2
人气:478 ℃ 时间:2019-10-17 06:15:41
解答
a=2x²-3x+111a=22x²-33x+11所以原式=a²-11a+10=(a-1)(a-10)=(2x²-3x+1-1)(2x²-3x+1-10)=x(2x-3)(2x+3)(x-3)(x+y-2XY)(x+y-2)+(xy-1)^2=[(x+y)-2xy][(x+y)-2]+(xy-1)²=(x+y)²-2...
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