ryanbutler1354 ryanbutler1354 30-11-2019 Mathematics contestada PLEASE PLEASE HELP!!!!! WILL GIVE BRAINLIEST TO WHO ANSWERS CORRECTLY FIRST!!!!!! Factor completely 4x2 + 36x + 81. a. (2x + 9)(2x + 9) b. (2x − 9)(2x − 9) c. (4x + 9)(4x + 9) d. (4x − 9)(4x − 9)