SOLUTION: (2x+5)(2x-5) please solve using mulitplication

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Question 381585: (2x+5)(2x-5) please solve using mulitplication
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

If I am understanding the Question properly:

Note:SUM of the inner product(10*x) and the outer product(-10x) = 0

(2x+5)(2x-5)= 0 

 4x^2 - 25 = 0

 4x^2 = 25

  x^2 = 25/4

   x = ±  5/2