Question

How do you solve `(\sqrt{15})^{2}+x^{2}=(65)^{2}`?

Answer 1

`x= pm sqrt 4210`

Explanation:

The first thing to do is simplify, to yield:

`15+x^2=4225`

Rearanging:

`x^2 = 4210`

Square rooting each side:

`x = pm sqrt 4210`