# Chapter 5 - Section 5.3 - Polynomials and Polynomial Functions - Exercise Set: 106

$3y^{5a}-3y^{3a}-3.2y$

#### Work Step by Step

We are given $(9y^{5a}-4y^{3a}+1.5y)-(6y^{5a}-y^{3a}+4.7y)$. We can subtract the second polynomial from the first polynomial by adding the opposite of the second polynomial to the first polynomial. $(9y^{5a}-4y^{3a}+1.5y)+(-6y^{5a}+y^{3a}-4.7y)$ Next, we can combine like terms. $(9y^{5a}-6y^{5a})+(-4y^{3a}+y^{3a})+(1.5y-4.7y)=3y^{5a}-3y^{3a}-3.2y$

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