Expand
x^{2}-10nx+25n^{2}
Evaluate
\left(5n-x\right)^{2}
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25n^{2}-10nx+x^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(5n-x\right)^{2}.
25n^{2}-10nx+x^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(5n-x\right)^{2}.
Examples
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Matrix
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