Question 477782
{{{sqrt(2.25)}}} = 1.5 
( We are increasing the original value times 1.5, that is the value which will be squared.)
x + 5  = 1.5x
5  = .5x 
x  = 10

To check, 10^2 = 100
15 ^2 = 225

225/100 = 2.25.
Cleomenius.