因式分解:2a²-4a+2 解方程:1/(x-1)=3/(2x-2)+1
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因式分解:2a²-4a+2 解方程:1/(x-1)=3/(2x-2)+1
因式分解:2a²-4a+2 解方程:1/(x-1)=3/(2x-2)+1
因式分解:2a²-4a+2 解方程:1/(x-1)=3/(2x-2)+1
2a²-4a+2
=2(a²-2a+1)
=2(a-1)²
1/(x-1)=3/(2x-2)+1
1/(x-1)=3/2*1/(x-1)+1
1/2 *1/(x-1)+1=0
2(x-1)+1=0
2x-1=0
x=1/2
2a²-4a+2 = 2 (a²-2a+1) = 2 ( a - 1 )²
1/(x-1)=3/(2x-2)+1
2 = 3 + 2x - 2
2x = 1
x = 1 / 2
2a²-4a+2 =2(a²-2a+1) =2(a-1)²