Final answer to the problem
$\left(7x^{\left(a+3\right)}+\frac{5}{3}y^{\left(m-a\right)}\right)^2$
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Step-by-step Solution
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1
Divide $5$ by $3$
$\left(7x^{\left(a+3\right)}+\frac{5}{3}y^{\left(m-a\right)}\right)^2$
Final answer to the problem
$\left(7x^{\left(a+3\right)}+\frac{5}{3}y^{\left(m-a\right)}\right)^2$