Question

PLEASE HELP ME WITH QUESTION 15 PLEASEEE IT DUES TODAY, SOON!!!

Answer 1

`14. \: \: \: m {}^(4) - 16 \\ = (m {}^(2) -4)(m {}^(2) + 4) \\ = (m - 2)(m + 2)(m {}^(2) + 4) \\15. \: \: \: x {}^(2) + 4xy + 4y {}^(2) - 4z {}^(2) \\ (x + 2y) {}^(2) - 4z {}^(2) \\ (x + 2y - 2z)(x + 2y + 2z) \\ 16. \: \: m {}^(4) + m {}^(2) - 12 \\ (m {}^(4) + 4m {}^(2) )( - 3m {}^(2) - 12) \\ m {}^(2) (m {}^(2) + 4) - 3(m {}^(2) + 4) \\ (m {}^(2) + 4)(m {}^(2) - 3) \\`