Algebra
12 Online
OpenStudy (anonymous):
what is x^2-64 factored out to be
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OpenStudy (anonymous):
I think it should be (x+8)(x-8)
OpenStudy (anonymous):
That's right.
OpenStudy (anonymous):
Yay!(:
OpenStudy (anonymous):
thnk guys im like so out of it right now and I .. just thank you
hero (hero):
lolz
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OpenStudy (anonymous):
Your welcome(:
hero (hero):
Also, just in case you didn't know,
a^2 - b^2 = (a + b)(a - b)
That's called Difference of Squares
OpenStudy (anonymous):
yeah thats what its call i forgot thank you
OpenStudy (anonymous):
i have one more tho
OpenStudy (anonymous):
what is it?
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hero (hero):
This time, it's probably going to be the last question in the book. Something super hard, lol
OpenStudy (anonymous):
lol no
OpenStudy (anonymous):
Lol I might know, what is it? I'm an eighth grader taking 10th grade math, so who knows lol
OpenStudy (anonymous):
\[\frac{ 15x+5 }{ x ^{2} -1}\]
OpenStudy (anonymous):
I don't remember how to solve this one, sorry :(
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OpenStudy (anonymous):
but thats not one the answers
hero (hero):
Did you post the question correctly? Double check.
OpenStudy (anonymous):
o no sorry on the numerator it is 15x+15 thank you
hero (hero):
\[\frac{15x + 15}{x^2-1}=\frac{15(x + 1)}{(x+1)(x-1)} = \frac{15\cancel{(x+1)}}{\cancel{(x+1)}(x-1)}\]
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OpenStudy (anonymous):
thank you