This is a 45-45-90 triangle, and so the sides opposite of the 45 degree angle are the same, while the hypotenuse is √2
6√2(√2) = 6(2) = 12
x = 12
Note: two of the same roots will become one whole number, for example:
√2(√2) = 2
√3(√3) = 3
etc etc
hope this helps
