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(1)9(X一2)^2=4(X十1)^2 (2)(X一√2)^2=5(√2一X) (3)X(3一2X)十2X=3 用因式分解法 我初
(1)9(X一2)^2=4(X十1)^2
(2)(X一√2)^2=5(√2一X)
(3)X(3一2X)十2X=3
用因式分解法
人气:432 ℃ 时间:2020-02-03 11:22:06
解答
(1)
9(X一2)^2-4(X十1)^2=0
[3(x-2)+2(x+1)][3(x-2)-2(x+1)]
(2)
(X一√2)^2-5(√2一X)=0
(X一√2)[(X一√2)+5]=0
(3)
X(3一2X)十2X-3=0
(x-1)(3-2x)=03道题已经分解因式了,解可以一眼看穿了虽然解可以一眼看穿,不过你。。
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