Question

Simplify Each Radical Expression. Leave in radical form. (Do not use decimals.)

3√(8) – 3√(16)

Answer 1

`3\sqrt 8 - 3√(16)\\\\=3√(4 * 2) -3 √(4^2)\\\\=3\cdot 2 \sqrt 2 - 3\cdot 4\\\\=6\sqrt 2 - 12\\\\=6\left(\sqrt 2-2 \right)`