Chapter 10 - Section 10.4 - Adding, Subtracting, and Multiplying Radical Expressions - Practice - Page 706: 8

$5y\sqrt[3]{{y}^{2}}$

Step 1: $ \sqrt[3]{8{y}^{5}} +\sqrt[3]{27{y}^{5}}$ Step 2: $ \sqrt[3]{8{y}^{3}}\times \sqrt[3]{{y}^{2}} +\sqrt[3]{27{y}^{3}}\times \sqrt[3]{{y}^{2}}$ Step 3: $ 2y\sqrt[3]{{y}^{2}} +3y\sqrt[3]{{y}^{2}}$ Step 4: $5y\sqrt[3]{{y}^{2}}$