√52 square root of 52, 6*6=36 -4*-4=16 add them together and then square root that number
The average would be 666.43 or 666.4 if it needs to be rounded to the nearest tenth

- Simplify ⇨ 1/x(x+a) + 1/x(x-a)


To add or subtract expressions, expand them to make their denominators the same. Least common multiple of
and
is
. Multiply
. Multiply
.

Because
and
have the same denominator, add them by adding their numerators.

Combine like terms in x-a+x+a.

Cancel out x in both the numerator and denominator.

Expand
.

90°-53°=37°
The whole angle is right angled