Factor each completely.

7x²-31x-20

9k²+9k

7x²-45x-28

2b²+17b+21

5p²-p-18

28n⁴+16n³-80n²

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Its worth 10000000 points need asap if you answer correctly ill mark brainliest

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.