What should I put in my problem

here is your mark brainliest

it is a secret for it not to be compromised sorry

step-by-step explanation:

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

the answer is d

for problems like this theres an app, its photomath that explains the problem and gives the answer hope i