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x*x=12*12+7*7-2(12*7)*.57
We simplify the equation to the form, which is simple to understand
x*x=12*12+7*7-2(12*7)*.57
Reorder the terms in parentheses
*x=+144+49+(-168)*.57
Reorder the terms in parentheses
*x=+144+49+(-95.76)
Remove unnecessary parentheses
+*x=+144+49-95.76
We move all terms containing x to the left and all other terms to the right.
+1x=+144+49-95.76
We simplify left and right side of the equation.
+1x=+97.24
We divide both sides of the equation by 1 to get x.
x=97.24
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