Factor
-\left(5x-2y\right)^{2}
Evaluate
-\left(5x-2y\right)^{2}
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-25x^{2}+20yx-4y^{2}
Consider -25x^{2}+20xy-4y^{2} as a polynomial over variable x.
\left(5x-2y\right)\left(-5x+2y\right)
Find one factor of the form kx^{m}+n, where kx^{m} divides the monomial with the highest power -25x^{2} and n divides the constant factor -4y^{2}. One such factor is 5x-2y. Factor the polynomial by dividing it by this factor.
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