10 points rewarded... Solving equation

If X (is greater than or equal to) -1, 4+√(5x+5)=9, then x=?

Please show your work
Thank you so much

as x>=-1,
4+sq. root 5x+5=9,
sq. root =5,
on squaring both sides,
5x+5=25,
5x=20,
x=4,
good luck !!!!!

okay, first solve the equation as such:

4+√(5x+5)=9
√(5x+5)=5
5x + 5 = 25
5x = 20
x = 4

x ≥ -1

4+√(5x+5) = 9
√(5x+5) = 5
5x + 5 = 25
x = 4