Pls Anwer will give 15 points
Find the value of x.

RSM? Anyway. 40º FOR SURE. Remember the degrees sign! :D

Step-by-step explanation:

x = 180º - 75º - 65º

x = 40º

This is because the 75º angle is the same throughout the whole side. It can't change because it's a T R I A N G L E. Really hope this helps!!

  ab = 2

Step-by-step explanation:

You know that ...

  (a +b)^2 = a^2 +2ab +b^2

Rearranging, we can solve for ab ...

  2ab = (a^2 +b^2) -(a +b)^2

  ab = ((a +b)^2 -(a^2 +b^2))/2 = (3^2 -5)/2

  ab = 2