Question

Please help and thank you

Answer 1

20

Explanation:

We know that a = 5 and b=-2

The formula is
`\sqrt{a^(2)*b^(4)`

So we do 5 squared multiplied by -2 to the power of 4 and square root

`\sqrt{5^(2)*(-2)^(4)`

Which is 20

Answer 2

C

Explanation:

a is defined first as 5. So a = 5.

b is defined after the circle b = -2

a^2 = 5^2 = 25

B^4 =(- 2)^4 = 16

Therefore sqrt(a^2 * b^4) = sqrt(25 * 16) = sqrt(400) = 20

The answer is C