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