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Posted by **vishal** on Tuesday, May 31, 2011 at 1:14pm.

4n2 + 28n + 49

- math -
**Anonymous**, Tuesday, May 31, 2011 at 2:11pmRecognize the perfect square form, a^2+2ab+b^2 = (a + b)^2

4n^2 + 28n + 49

(2n + 7)^2

- math -
**Bosnian**, Tuesday, May 31, 2011 at 2:19pmIn google type :

wolfram alpha

When you see list of results click on:

Wolfram Alpha: Computation Knowledge Engine

When page be open in rectangle type:

4n^2+28n+49

and click option =

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