Factoring help needed for 49 - (x + 4y)^2

texbum

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Sep 3, 2007
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I Need Some Help With Factoring. The first problem, in a series of problems I cant get figured out, is:

49-(x+4y)^2

Any help would be much appreciated!
 

Subhotosh Khan

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Jun 18, 2007
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Re: I Need Some Help With Factoring

texbum said:
The first problem, in a series of problems I cant get figured out, is:

49-(x+4y)^2

Any help would be much appreciated!
Hint:

49 = \(\displaystyle 7^2\)

and

\(\displaystyle a^2 - b^2 = (a+b)(a-b)\)
 

texbum

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Sep 3, 2007
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(7+x-4y)(7-x-4y)?
 

Denis

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Feb 17, 2004
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texbum said:
(7+x-4y)(7-x-4y)?
Not quite: (7 + x + 4y)(7 - x - 4y)
 
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