Solve for y
y=5x\left(x-2\right)
Solve for x (complex solution)
x=-\frac{\sqrt{5y+25}}{5}+1
x=\frac{\sqrt{5y+25}}{5}+1
Solve for x
x=-\frac{\sqrt{5y+25}}{5}+1
x=\frac{\sqrt{5y+25}}{5}+1\text{, }y\geq -5
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y=5\left(x^{2}-2x+1\right)-5
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-1\right)^{2}.
y=5x^{2}-10x+5-5
Use the distributive property to multiply 5 by x^{2}-2x+1.
y=5x^{2}-10x
Subtract 5 from 5 to get 0.
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