Question

Factorise: (a+2b)^2-(a+2b)(3a-7b)

Answer 1

Answer :


${(a + 2b)}^{2} - (a + 2b)(3a - 7b) \\ \\ factor \: out \: a + 2b \: from \: the \: expression \\ \\ (a + 2b)(a + 2b - (3a - 7b)) \\ \\ remove \: brackets \: and \: change \: signs \\ \\ = > \: when \: there \: is \: negative \: sign \: in \: front \: of \: bracket \: then \\ change \: the \: sign \: of \: each \: term \: in \: bracket \\ \\ (a + b)(a + 2b - 3a + 7b) \\ \\ collect \: like \: terms \\ \\ (a + 2b)( - 2a + 9b)$



HOPE IT WOULD HELP YOU

Answer 2

Answer:

Step-by-step explanation: