PLEASE HELP ASAP WITH MY TEST
I will do brainiest

15.8

Step-by-step explanation:

You already know two sides of the triangle

15 and 5

square them in order to get:

225 and 25

Add them:

=250

Then square root 250, and you will get 15.8

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: