algebric formulas
Post on 12-Sep-2015
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DESCRIPTION
Algebric Formulas
TRANSCRIPT
1) a2+ 2ab + b2= (a + b)2
2) a2 2ab + b2= (a b)2
3) a2 b2= (a + b) (a b)
4) x2+ (a + b) x + ab = (x + a) (x + b)
1) a3+ b3+ 3a2b + 3b2a = (a + b)3
2) a3- b3- 3a2b + 3b2a = (a - b)3
3) a3+ b3= (a + b)(a2- ab + b2)
4) a3- b3= (a - b)(a2+ ab + b2)
5) a3+ b3+ c3- 3abc= (a + b + c)(a2+ b2+ c2- ab - bc - ac)
6) If a + b + c = 0 then a3+ b3+ c3=3abc
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