Question

PLEASE HELP ASAP I AM TIMED NO GUESSING THANK YOUUU' 22) What is the following sum?

Answer 1

$\sqrt[3]{16x^7}\cdot\sqrt[3]{12x^9}=\sqrt[3]{16\cdot12\cdot x^{16}}=\sqrt[3]{4\cdot4\cdot4\cdot3\cdot x^{15}\cdot x}=\\\\=\sqrt[3]{4^3}\cdot\sqrt[3]{x^{15}}\cdot\sqrt[3]{3x}=\boxed{4x^5\sqrt[3]{3x}}$

Answer D.