Question

this is my last one that im having a problem with...ill give a medal (:

Answer 1

\[3\sqrt[3]{81}-2\sqrt[3]{54}\]

Answer 2

simplify.

Answer 3

\[3 * \sqrt[3]{81} - 2*\sqrt[3]{54} = 3*\sqrt[3]{27*3} - 2*\sqrt[3]{27*2} = 3 *\sqrt[3]{27}*\sqrt[3]{3} - 2*\sqrt[3]{27}*\sqrt[3]{2} \]
we know that 3rd root of 27 is equal to 3 (because 3*3*3 = 27)

\[3*3*\sqrt[3]{3} - 2*3*\sqrt[3]{2} = 9*\sqrt[3]{3} - 6*\sqrt[3]{2}\]

Answer 4

Thanks (: