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ICSE Class 9 Answered

factorise: 1-2a-2b-3(a+b)^2
Asked by laxmi.agarwal055 | 16 Feb, 2018, 08:38: PM
answered-by-expert Expert Answer
begin mathsize 16px style 1 minus 2 straight a minus 2 straight b minus 3 left parenthesis straight a plus straight b right parenthesis squared
equals negative 2 straight a minus 2 straight b plus 1 minus 3 left parenthesis straight a plus straight b right parenthesis squared
equals negative 2 open parentheses straight a plus straight b close parentheses minus 3 left parenthesis straight a plus straight b right parenthesis squared plus 1
equals open parentheses straight a plus straight b close parentheses open square brackets negative 2 minus 3 open parentheses straight a plus straight b close parentheses plus 1 close square brackets
equals open parentheses straight a plus straight b close parentheses open parentheses negative 2 minus 3 straight a minus 3 straight b plus 1 close parentheses
equals open parentheses straight a plus straight b close parentheses open parentheses negative 3 straight a minus 3 straight b minus 1 close parentheses end style
Answered by Sneha shidid | 17 Feb, 2018, 11:18: AM
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