已知-x+2y=6,则3(x-2y)2-5(x-2y)+6的值是______.
人气:486 ℃ 时间:2019-11-08 15:21:32
解答
∵-x+2y=6,即x-2y=-6,
∴原式=3×36-5×(-6)+6=144.
故答案为:144
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