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0=a(160-80)(160-80)+70
We simplify the equation to the form, which is simple to understand
0=a(160-80)*(160-80)+70
Simplifying terms in parentheses
0=a*(+80)*(160-80)+70
Simplifying terms in parentheses
0=a*(+80)*(+80)+70
Reorder the terms in parentheses
multiplication of parentheses
0=a*(+6400)+70
Reorder the terms in parentheses
0=+(+6400a)+70
Remove unnecessary parentheses
0=+6400a+70
We move all terms containing a to the left and all other terms to the right.
-6400a=+70-0
We simplify left and right side of the equation.
-6400a=+70
We divide both sides of the equation by -06400 to get a.
a=-0.0109375
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