Answers

2016-07-10T09:40:36+08:00
Given: x^{3}-125
  x^{3}-125 = ( x - 5 )(  x^{2}  +5x +25)
step 1 : remove the cube of  x^{3} and125  x^{3} =(x-5)
step 2 : square x , muliply x and 5,square 5 =  x^{2} + 5x +25
= ( x - 5 )( x^{2} +5x+25)
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