Answer:
X=8
Step-by-step explanation:

The expression that is not a rational expression is:

<h3>What is a rational expression?</h3>
A rational expression is an expression that has a variable in the denominator.
For expression
, x + 3 is a common term to the numerator and denominator, hence it is simplified to 2x - 1 and is not a rational expression.
More can be learned about rational expressions at brainly.com/question/2264785
#SPJ1
I believe the measure of AB is 90 degrees, but I may be wrong.
1 and 146
2 and 73
and that's about it