You can prove it by the SAS postulate which should be the first option
Answer: 2
Step-by-step explanation: add 10 to both sides so -10+10=0 and -6+10=4
then you have 2x=4 simplify
I typed right on the problem set.
All this means is (f(x)) + (g(x))
2x-1+ x^2-3x-2=
=== x^2 - x -3