Question

Heeelllllllllllp Simplify the expression completely. √144 +18 √12-5√64

Answer 1

Answer:

A

Step-by-step explanation:

using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$ , then

$\sqrt{12}$

= $\sqrt{4(3)}$

= $\sqrt{4}$ × $\sqrt{3}$

= 2$\sqrt{3}$

Then

$\sqrt{144}$ + 18$\sqrt{12}$ - 5$\sqrt{64}$

= 12 + 18(2$\sqrt{3}$ ) - 5(8)

= 12 + 36$\sqrt{3}$ - 40

= - 28 + 36$\sqrt{3}$