Solve for y
y=-3\left(x+6\right)^{2}+4
Solve for x (complex solution)
x=-\frac{\sqrt{12-3y}}{3}-6
x=\frac{\sqrt{12-3y}}{3}-6
Solve for x
x=-\frac{\sqrt{12-3y}}{3}-6
x=\frac{\sqrt{12-3y}}{3}-6\text{, }y\leq 4
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y=-3\left(x^{2}+12x+36\right)+4
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+6\right)^{2}.
y=-3x^{2}-36x-108+4
Use the distributive property to multiply -3 by x^{2}+12x+36.
y=-3x^{2}-36x-104
Add -108 and 4 to get -104.
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