这里有三题 3(2x-1)²-12=0 2.(3x-2)(3x+2)=8 3.2x²-7x+6=0
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这里有三题 3(2x-1)²-12=0 2.(3x-2)(3x+2)=8 3.2x²-7x+6=0
这里有三题 3(2x-1)²-12=0 2.(3x-2)(3x+2)=8 3.2x²-7x+6=0
这里有三题 3(2x-1)²-12=0 2.(3x-2)(3x+2)=8 3.2x²-7x+6=0
3(2x-1)²-12
(2x-1)²=4
2x-1=2,2x-1=-2
x=3/2,x=-1/2
(3x-2)(3x+2)=8
9x²-4=8
9x²=12
x²=4/3
x=2根号3/3,x=-2根号3/3
2x²-7x+6=0
(2x-3)(x-2)=0
2x-3=0,x-2=0
x=3/2,x=2.
3(2x-1)²-12=0 x=3/2 x= -(1/2) 2.(3x-2)(3x+2)=8 x = -(2/根号[3]) &n...
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3(2x-1)²-12=0 x=3/2 x= -(1/2) 2.(3x-2)(3x+2)=8 x = -(2/根号[3]) x=2/根号[3] 3.2x²-7x+6=0 x= 2 x=3/2
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