-x + 6 or 6 - x
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2x-2 = 10 2x= 10+2 2x=12 x= 12/2 x=6
As written, that's 2(x - 6) You may have meant 4x^2 - 2x - 12 which would be 2(2x + 3)(x - 2)
0.25
2x+10=12 2x=2 x=1
5-4x=12-2x isolate your x's on one side 5=12-2x+4x 5-12=-2x+4x simplify -7=2x divide by 2 x=-7/2, or x=-3.5