Factor
\left(7x-4y\right)\left(3x+2y\right)
Evaluate
\left(7x-4y\right)\left(3x+2y\right)
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21x^{2}+2yx-8y^{2}
Consider 21x^{2}+2xy-8y^{2} as a polynomial over variable x.
\left(3x+2y\right)\left(7x-4y\right)
Find one factor of the form kx^{m}+n, where kx^{m} divides the monomial with the highest power 21x^{2} and n divides the constant factor -8y^{2}. One such factor is 3x+2y. Factor the polynomial by dividing it by this factor.
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