Question

can someone please help me out with this problem ? i been trying to do this for like 2 days now and i still don’t get it .. also i need some tips on how i can remember this when im doing a different problem

Answer 1

Explanation:

the Pythagorean theorem is

c is the hypotenuse which is the side opposite of the right angle

plug the numbers into the Pythagorean theorem

`x^2+(√(26))^2=13^2`

when squaring a square root, just take the number in the radical and get rid of the radical

`x^2+26=169`

subtract 26 from both sides

`x^2=`
`143`

find the square root of 143

143 is prime so it can just be written as

`x=√(143)`