(6x-1)²-25=0.

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(6x-1)²-25=0.
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(6x-1)²-25=0.
(6x-1)²-25=0.

(6x-1)²-25=0.
(6x-1)²-25=0
(6x-1+5)(6x-1-5)=0
(6x+4)(6x-6)=0
x1=-2/3,x2=1