Evaluate
\left(9x+2a\right)^{2}
Expand
81x^{2}+36ax+4a^{2}
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4a^{2}+36ax+81x^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(2a+9x\right)^{2}.
4a^{2}+36ax+81x^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(2a+9x\right)^{2}.
Examples
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Matrix
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Simultaneous equation
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Limits
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