Answers

2015-08-23T16:40:19+08:00
If you mean square of a binomial, this is the formula

(first term x first term) + (first term x last term x two) + (last term x last term) 

example:

(5a + 2b)² 

(5a x 5a) + (5a x 2b x 2) + (2b x 2b)

=25a² + 20ab + 4b²
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