Answers

2015-08-06T17:50:34+08:00

ex. of square of a binomial
(x+y)²=x²+2xy+y²
ex. of cube of a binomial
(x+y)³=(x)³+3(x)²(y)+3(x)(y)²+(y)³
         =x³+3x²y+3xy²+y³
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