Solve for y
y=\left(x+2\right)^{2}
Solve for x (complex solution)
x=-\left(\sqrt{y}+2\right)
x=\sqrt{y}-2
Solve for x
x=-\left(\sqrt{y}+2\right)
x=\sqrt{y}-2\text{, }y\geq 0
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y=\left(x+2\right)^{2}
Multiply x+2 and x+2 to get \left(x+2\right)^{2}.
y=x^{2}+4x+4
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+2\right)^{2}.
Examples
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