Part a: factor 5x2b2 + 14xb2 − 3b2. show your work. (4 points) part b: factor x2 − 18x + 81. show your work. (3 points) part c: factor x2 − 121. show your work. (3 points) (10 points)

Part A is accomplished by first factoring out the b^2 to get.  Factor that completely using the quadratic formula to get .  Part B is done entirely with the quadratic formula (only cuz that's the easiest way to factor a second degree polynomial!) to get (x-9)(x-9) or (x-9) multiplicity 2.  Part C is done by taking roots.  Keep in mind that since this is a second degree polynomial you will have 2 solutions. , therefore, and which is +11 and -11.  And you're done! Factoring is very important...make sure you learn it and learn it well!!!