Multiply $3 x^{2} y - 7 x y^{2} + 2 x y b y 4 x y$ .

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Solution

Multiplication of algebraic expression
Multiplying each term of the polynomial by the monomial.
$\begin{array}{rcl} 3 x^{2} y - 7 x y^{2} + 2 x y b y 4 x y & = & 4 x y \times (3 x^{2} y - 7 x y^{2} + 2 x y) \\ = & 12 x^{3} y^{2} - 28 x^{2} y^{3} + 8 x^{2} y^{2} \end{array}$ .
Therefore, the product is $12 x^{3} y^{2} - 28 x^{2} y^{3} + 8 x^{2} y^{2}$ .

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