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解方程4(x%1)²=9

4(x-1)^2=9 (x-1)^2=9/4 x-1=3/2 or -3/2 x= 5/2 or 1/2

(1) 两边开方,得2(x - 1) = 3(x - 5)或2(x - 1) = -3(x - 5), 分别得x = 13和x = 17/5 (2) 只好套公式: x = (7 ± √41)/2 (3) (x - 2)(x + 1) = 0 x = 2, x = -1

4(x-2)=x+1 4x-8=x+1 4x-x=1+8 3x=9 x=9÷3 x=3 很高兴为您解答,祝你学习进步!如果有其他问题请另发或点击向我求助,请谅解,谢谢! 有不明白的可以追问!如果您认可我的回答。请点击下面的【选为满意回答】按钮。

2(3x-1)=3(3x+1)或者2(3X-1)=-3(3x+1) 6x-2=9x+3或者6x-2=-9x-3 x=-5\9或者x=-1/15

(x-9.6)÷4=7.5 x-9.6=7.5×4 x-9.6=30 x=39.6

去括号后得:x2-5x+6=x2+10x+9+4,移项合并得:-15x=7,解得:x=-715.

[2(x+1)十3(x-1)][2(x+1)-3(x-1)]=0 x=1/5 x=5

(-b±√(b²-4ac))/2a a=1 b=-4 c=-1 (-b±√(b²-4ac))/2a =(4±√(16+4))/2 =(4±2*√5))/2 =2±√5

x-1:2x+1=4/9 1/2x=-5/9 x=-10/9 x=-1又1/9

(1)解:去括号得:2x+2=-3x+12,移项合并得:5x=10,解得:x=2;(2)解:方程变形为5x?152-10x+205=2.5,去分母得:5(5x-15)-2(10x+20)=25,去括号得:25x-75-20x-40=25,移项合并得:5x=140,解得:x=28.

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