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(1)x^2+16x=0 (2)5x^2-10x=-5
人气:229 ℃ 时间:2020-10-01 03:29:12
解答
(1)x^2+16x=0
x(x+16)=0
x=0或x=-16
(2)5x^2-10x=-5
5x^2-10x+5=0
x^2-2x+1=0
(x-1)^2=0
x=1
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