Question

-3 √81+ √16 combine these radicals.

A. -23
B. -11
C. -3 √97
D. -3 √13

Please help!!

Answer 1

-3√81+√16=-3(9)+4=-27+4=-23

Answer: A.-23

Answer 2

`\text{The value of }-3√(81)+√(16)\text{ is -23}`

Option A is correct

Explanation:

Given the expression

`-3√(81)+√(16)`

We have to simplify the above expression.

`-3√(81)+√(16)`

`√(81)=(9^2)^{(1)/(2)}=9`

`√(16)=√(4^2)=4`

`-3√(81)+√(16)`

`=-3* 9+4`

`=-27+4`

`=-23`

Hence, option A is correct.