|2x - 1|² -6|2x - 1| - 7 = 0
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Step-by-step explanation:
(2x-1)=y
y2-6y-7=0
y2-7y+y-7=0
y(y-7) +1(y-7) =/
(y-7) (y-1) =0
y=7 Or y=1
2x-1=7
x=4
2x-1=1
x=1
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