Expand
49w^{2}-28w+4
Evaluate
\left(2-7w\right)^{2}
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4-28w+49w^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2-7w\right)^{2}.
4-28w+49w^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2-7w\right)^{2}.
Examples
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Matrix
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