You are subtracting y whose value is -8 so it should be 3 - (-8) + 2 = 3 + 8 + 2 = 13.

# Homework Help Topic

**Kiramj**#216

OMV! I just realized ty ment thank you.

Wow… All this time I was like, who’s ty? WHOS TY!!!.

What am I missing?!

**fionayim**#218

AC ^2 + CB^2 = AB^2

ie. x^2 + (x+17)^2 = 25^2

expand and simplify

x^2 + x^2 + 34x + 289 = 625

make equation = 0 . then divide whole equation by 2

therefore

x^2 + 17x -168 = 0

use quadratic equation to solve for x

you get x=7, -24

since x is a length it must be x>0

therefore

x=7

CHECK BY SUBSITUTION into original equation

and it works!