Answer:
see below
Step-by-step explanation:
5^2 means 5*5 not 5*2
5^2 = 5*5 = 25 not 10
Answer:
C = 10
Step-by-step explanation:
Find the last side of the triangle using the Pythagorean theorem.

You have a and b already, a = 6, b = 8

solve this to get

C = 10
Apply the same to the other 2 triangles. C is your longest side!
5c + 3 - 2c + 5
5c - 2c + 3 + 5
3c + 8 ~~~