Evaluate
\left(w-2r\right)^{2}
Expand
4r^{2}-4rw+w^{2}
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w^{2}-4wr+4r^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(w-2r\right)^{2}.
w^{2}-4wr+4r^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(w-2r\right)^{2}.
Examples
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Matrix
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Simultaneous equation
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Integration
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Limits
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