Question 442812
√(2u+10)-2√u=0
√(2u+10)=2√u *
(√(2u+10))^2=(2√u)^2
2u+10=4u
10=2u
u=5

Check
*√(2u+10)=2√u
√(2(5)+10=2√5
√(10+10)=2√5
√20=2√5
√4x5=2√5
2√5=2√5
Correct

Answer: u is 5