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