Evaluate
9\left(2y-5x\right)^{2}
Expand
225x^{2}-180xy+36y^{2}
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9\left(25x^{2}-20xy+4y^{2}\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(-5x+2y\right)^{2}.
225x^{2}-180xy+36y^{2}
Use the distributive property to multiply 9 by 25x^{2}-20xy+4y^{2}.
9\left(25x^{2}-20xy+4y^{2}\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(-5x+2y\right)^{2}.
225x^{2}-180xy+36y^{2}
Use the distributive property to multiply 9 by 25x^{2}-20xy+4y^{2}.
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