Triangle ABC is an obtuse triangle. =15, =2+1 and =2+10. BC is the longest side of the triangle. Find the possible values of x.

Where's the rest of the

I’m not sure what sujevtbis this

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.