( 1,5 a - \frac { 2 } { 3 } b ) ^ { 2 }
Evaluate
\frac{\left(\frac{9a}{2}-2b\right)^{2}}{9}
Expand
-2ab+\frac{4b^{2}}{9}+\frac{9a^{2}}{4}
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2,25a^{2}-2ab+\frac{4}{9}b^{2}
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(1,5a-\frac{2}{3}b\right)^{2}.
2,25a^{2}-2ab+\frac{4}{9}b^{2}
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(1,5a-\frac{2}{3}b\right)^{2}.
Examples
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Limits
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