Answers

2016-07-18T20:22:32+08:00
Ex 1. x^2+8x+12
Factor = (x+6) (x+2)
Checking = x*x = x^2
                = x*2 = 2x
                = x*6 = 6x
                = 6*2 = 12
Add the outer and inner term which is 2x & 6x
               = x^2+8x+12
               = 8x is the outer and inner term that we add :))
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