Factor completely 3x3 – 21x2 – 27x

"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?