Evaluate
\left(x+h\right)\left(x+h-3\right)
Expand
x^{2}+2hx-3x+h^{2}-3h
Graph
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x^{2}+2xh+h^{2}-3\left(x+h\right)
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}-3x-3h
Use the distributive property to multiply -3 by x+h.
x^{2}+2xh+h^{2}-3\left(x+h\right)
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}-3x-3h
Use the distributive property to multiply -3 by x+h.
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