Solve for y
y=-\left(x^{2}-12x+40\right)
Solve for x (complex solution)
x=\sqrt{-y-4}+6
x=-\sqrt{-y-4}+6
Solve for x
x=\sqrt{-y-4}+6
x=-\sqrt{-y-4}+6\text{, }y\leq -4
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-12x+y+40=-x^{2}
Subtract x^{2} from both sides. Anything subtracted from zero gives its negation.
y+40=-x^{2}+12x
Add 12x to both sides.
y=-x^{2}+12x-40
Subtract 40 from both sides.
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Limits
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