subtract 4a(a+b+c)-3b(a+b) from 6a(2a-3b+4c)

Asked by ajayrath7 | 27th Jul, 2017, 05:20: PM

Expert Answer:

begin mathsize 16px style 6 straight a left parenthesis 2 straight a minus 3 straight b plus 4 straight c right parenthesis space minus space left square bracket 4 straight a left parenthesis straight a plus straight b plus straight c right parenthesis minus 3 straight b left parenthesis straight a plus straight b right parenthesis right square bracket
equals space 12 straight a squared minus 18 ab plus 24 ac minus left square bracket 4 straight a squared plus 4 ab plus 4 ac minus 3 ab minus 3 straight b squared right square bracket
equals 12 straight a squared minus 18 ab plus 24 ac minus left square bracket 4 straight a squared plus ab plus 4 ac minus 3 straight b squared right square bracket
equals 12 straight a squared minus 18 ab plus 24 ac minus 4 straight a squared minus ab minus 4 ac plus 3 straight b squared
equals 8 straight a squared minus 19 ab plus 20 ac plus 3 straight b squared end style

Answered by Rashmi Khot | 27th Jul, 2017, 08:09: PM