Posted by jam on Tuesday, September 28, 2010 at 1:00pm.
2a + sqrt (2a^2)=10
a(2+sqrt2)=10
a=10/(3.141)
Square root of a^2 = a
Factor out a.
a(2 + sqrt2) = 10
Sqrt 2 = 1.4142 = 1.41
a(2 + 1.41) = 3.41a = 10
Divide both sides by 3.41.
x = 10/3.41 = 2.93