Evaluate
2\left(x^{2}+h^{2}\right)
Expand
2x^{2}+2h^{2}
Graph
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x^{2}+2xh+h^{2}+\left(x-h\right)^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+h\right)^{2}.
x^{2}+2xh+h^{2}+x^{2}-2xh+h^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-h\right)^{2}.
2x^{2}+2xh+h^{2}-2xh+h^{2}
Combine x^{2} and x^{2} to get 2x^{2}.
2x^{2}+h^{2}+h^{2}
Combine 2xh and -2xh to get 0.
2x^{2}+2h^{2}
Combine h^{2} and h^{2} to get 2h^{2}.
x^{2}+2xh+h^{2}+\left(x-h\right)^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+h\right)^{2}.
x^{2}+2xh+h^{2}+x^{2}-2xh+h^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-h\right)^{2}.
2x^{2}+2xh+h^{2}-2xh+h^{2}
Combine x^{2} and x^{2} to get 2x^{2}.
2x^{2}+h^{2}+h^{2}
Combine 2xh and -2xh to get 0.
2x^{2}+2h^{2}
Combine h^{2} and h^{2} to get 2h^{2}.
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