Solve. sqrt of b^4/25=4

To solve this equation, we need to isolate the variable b on one side of the equation.

First, square both sides of the equation to get rid of the square root.

(b^4/25) = 4^2
b^4/25 = 16

Next, multiply both sides by 25 to get rid of the denominator:

b^4 = 16*25
b^4 = 400

Then, take the fourth root of both sides to solve for b:

b = ±√400
b = ±20

Therefore, the solutions to the equation are b = 20 or b = -20.