(2x-7)^2-7(-(2x-7))=0
(2x-7)^2+7(2x-7)=0
(2x-7)(2x-7+7)=0
(2x-7)×2x=0
(2x-7)x=0
2x-7=0 или x=0
x=7/2 x=0
x1=0, x2=7/2 или x2=3.5
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(2x-7)^2-7(-(2x-7))=0
(2x-7)^2+7(2x-7)=0
(2x-7)(2x-7+7)=0
(2x-7)×2x=0
(2x-7)x=0
2x-7=0 или x=0
x=7/2 x=0
x1=0, x2=7/2 или x2=3.5