x=-12
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32 - 121 - 64 = 36x => -153 = 36x so that x = -4.25
4
x = 4
36x-9y=15 36x-15=9y y=4x-15/4 remember slope is the m on y=mx+b so slope=4
The expression is likely 4x2 - 36x +81 which is the same as (2x - 9)(2x - 9) or (2x - 9)2