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-4(-1)(-2)(2)=0
We simplify the equation to the form, which is simple to understand
-4(-1)*(-2)*(2)=0
Reorder the terms in parentheses
multiplication of parentheses
-4*(+2)*(2)=0
Reorder the terms in parentheses
multiplication of parentheses
-4*(+4)=0
Reorder the terms in parentheses
+(-16)=0
Remove unnecessary parentheses
-16=0
We move all terms containing to the left and all other terms to the right.
0=0+16
We simplify left and right side of the equation.
0=+16
0=16
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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