Question

simplify the radical expression.

1. $-sqrt{147} - sqrt{243}$

Explanation:

Step1: Factor out perfect squares

$-\sqrt{49 \times 3} - \sqrt{81 \times 3}$

Step2: Simplify each radical

$-7\sqrt{3} - 9\sqrt{3}$

Step3: Combine like radicals

$(-7 - 9)\sqrt{3}$

Answer:

$-16\sqrt{3}$