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Mathematics 18 Online
OpenStudy (anonymous):

Add and simplify if possible:

OpenStudy (anonymous):

\[3 \over x-5 \] + \[5 \over x ^{2}-25\]

OpenStudy (anonymous):

do u know what's special about x^2 -25?

OpenStudy (anonymous):

No...

OpenStudy (anonymous):

it's something called "the difference of 2 perfect squares".

OpenStudy (anonymous):

all that means is x^2 - a perfect square=(x+the square root)(x-the square root)

OpenStudy (anonymous):

so x^2-25 becomes (x+5)(x-5)

OpenStudy (anonymous):

Oh

OpenStudy (anonymous):

k, so now u have|dw:1324334896764:dw|

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