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ICSE Class 9 Answered

factorise:64-a*a*a*b*b*b
Asked by Shagun | 24 Jan, 2018, 09:28: PM
answered-by-expert Expert Answer
begin mathsize 16px style 64 minus straight a cross times straight a cross times straight a cross times straight b cross times straight b cross times straight b
equals 64 minus straight a cubed straight b cubed
equals left parenthesis 4 right parenthesis cubed minus left parenthesis ab right parenthesis cubed
equals left parenthesis 4 right parenthesis cubed minus 3 left parenthesis 4 right parenthesis squared left parenthesis ab right parenthesis plus 3 left parenthesis 4 right parenthesis left parenthesis ab right parenthesis squared plus left parenthesis ab right parenthesis cubed
equals 64 minus 48 ab plus 12 straight a squared straight b squared plus straight a cubed straight b cubed end style
Answered by Rashmi Khot | 25 Jan, 2018, 08:42: AM
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