Expand
-20n^{2}+100n-125
Evaluate
-5\left(2n-5\right)^{2}
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-5\left(4n^{2}-20n+25\right)
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2n-5\right)^{2}.
-20n^{2}+100n-125
Use the distributive property to multiply -5 by 4n^{2}-20n+25.
-5\left(4n^{2}-20n+25\right)
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2n-5\right)^{2}.
-20n^{2}+100n-125
Use the distributive property to multiply -5 by 4n^{2}-20n+25.
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