Đáp án: X= 2 hoặc x=-4
Đáp án:
Giải thích các bước giải:
4x^2-4x+1=(5-x)^2
=>(2x-1)^2=(5-x)^2
=>2x-1=5-x
=> 2x+x=5+1
=> 3x=6
=> x= 2
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