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4(x+2)2-(2x-1)2=-8
We simplify the equation to the form, which is simple to understand
4(x+2)2-(2x-1)2=-8
Reorder the terms in parentheses
+(+4x+8)*2-(2x-1)*2=-8
Reorder the terms in parentheses
+(+8x+16)-(2x-1)*2=-8
Remove unnecessary parentheses
+8x+16-(+2x-1+)+*2=-8
Reorder the terms in parentheses
+8x+16-(+4x-2)=-8
Remove unnecessary parentheses
+8x+16-4x+2=-8
We move all terms containing x to the left and all other terms to the right.
+8x-4x=-8-16-2
We simplify left and right side of the equation.
+4x=-26
We divide both sides of the equation by 4 to get x.
x=-6.5
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