Question

combine these radicals.
$-3\sqrt{81} + \sqrt{16}$
options:
$-3\sqrt{97}$
$-23$
$-3\sqrt{13}$
$-11$

Explanation:

Step1: Simplify each radical

$\sqrt{81}=9$, $\sqrt{16}=4$

Step2: Substitute and compute

$-3\times9 + 4 = -27 + 4$

Step3: Calculate final sum

$-27 + 4 = -23$

Answer:

$-23$