Evaluate
\left(-\frac{3x}{10}+y\right)^{2}
Expand
-\frac{3xy}{5}+\frac{9x^{2}}{100}+y^{2}
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0.09x^{2}-0.6xy+y^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(-0.3x+y\right)^{2}.
0.09x^{2}-0.6xy+y^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(-0.3x+y\right)^{2}.
Examples
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Simultaneous equation
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Integration
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Limits
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