Answer
$-28x^{7}y^{4}$
Work Step by Step
We are given the expression $14x^{2}y^{3}(-2x^{5}y)$. We can group like terms and then simplify.
$14\times-2\times x^{2} \times x^{5}\times y^{3}\times y$
Next, we can use the product rule for exponents to multiply the exponents.
$-28\times x^{2+5}\times y^{3+1}=-28x^{7}y^{4}$