Simplify 5x-2x what is this

Evaluate the expression. (9 + 5)(3 + 2)0

What is always true about a positive integer raised to a negative odd power?

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer