Solve the equation by finding the square root.

Question

4u2 + 4u + 1 = 75

Answer 1

I will assume you mean
4u^2 + 4u + 1 = 75
(2u+1)^2 = 75
2u + 1 = ± √75
2u = -1 ± 5√3
u = (-1 ± 5√3)/2

Answer 2

Find the square root of 4u2- 8u.