Expand
25y^{2}-16y+4
Evaluate
\left(5y-2\right)^{2}+4y
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25y^{2}-20y+4+4y
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(5y-2\right)^{2}.
25y^{2}-16y+4
Combine -20y and 4y to get -16y.
25y^{2}-20y+4+4y
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(5y-2\right)^{2}.
25y^{2}-16y+4
Combine -20y and 4y to get -16y.
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