Answers

2016-07-30T10:53:08+08:00
A³+b³=(a+b)(a²-b+c²)
a³-b³=(a-b)(a²+b+c²)
that is the formula
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2016-07-30T14:45:26+08:00
 a³ + b³    =   (a + b)(a²-ab +b²)
 a³- b³      =   (a - b)(a² + ab + b²)
          you should remember these by heart

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