I'm giving 50 points to who ever can give me the right answer, and can explain how to do it. i'm disparate. this is the only one i can't figure out.

3x+2x-x+2x^2=?

Manuela claims that and are congruent. which statement best describes her claim? she is incorrect because the segments do not have the same orientation. she is incorrect because the segments do not have the same length. she is correct because the segments have the same length. she is correct because the segments have the same orientation.