Factor
-\left(xy-13\right)\left(xy+5\right)
Evaluate
-\left(xy-13\right)\left(xy+5\right)
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-y^{2}x^{2}+8yx+65
Consider 65+8xy-x^{2}y^{2} as a polynomial over variable x.
\left(xy-13\right)\left(-xy-5\right)
Find one factor of the form ky^{m}x^{n}+p, where ky^{m}x^{n} divides the monomial with the highest power -y^{2}x^{2} and p divides the constant factor 65. One such factor is xy-13. Factor the polynomial by dividing it by this factor.
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