I do not have an answer but you could always take an explanations how to do it easier. Hope it helps :)
Explanation:
Example: solve √(2x+9) − 5 = 0
isolate the square root:
√(2x+9) = 5
square both sides:
2x+9 = 25
Now it should be easier to solve!
Move 9 to right:
2x = 25 − 9 = 16
Divide by 2:
x = 16/2 = 8
Answer:
x = 8
Check: √(2·8+9) − 5 = √(25) − 5 = 5 − 5 = 0