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Multiply:
$(7x + y)$ by $(x + 5y)$
To do:
We have to multiply $(7x + y)$ by $(x + 5y)$
Solution:
We know that,
$(a+b)\times(c+d)=a(c+d)+b(c+d)$
Therefore,
$(7x + y)\times(x + 5y)=7x (x + 5y) + y (x + 5y)$
$= 7x^2 + 35xy + xy + 5y^2$
$=7x^2 + 36xy + 5y^2$
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