Question 207489
x squared plus 3 radical 3 squared equal to 6 squared
Assume it's
x^2 + {{{3sqrt(3^2)}}} = 6^2
The square root of a square
x^2 + 3(3) = 36
:
x^2 + 9 = 36
:
x^2 = 36 - 9
:
x^2 = 27
x = {{{sqrt(27)}}}
x = {{{sqrt(9*3)}}}
x = {{{3*sqrt(3)}}}