Question

Need help quick

Answer 1

Solve for b

\[\sqrt{b^4/25} = 4\]

A.2

B. \[\pm 5\sqrt{2}\]

C. 3

D, \[\pm2\sqrt{5}\]

Answer 2

by the way b^4/25 is supposed to be a fracton

Answer 3

b2 / 5 = 4
b^2 = 20
b = +- sqrt 20 = +/- 2 sqrt 5

D

Answer 4

\[(b ^{4}) ^{1/2} \div 5 = 4\]

\[b ^{2} = 20\]

Answer 5

\[b = 2\sqrt{5}\]
so the answer is D