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OpenStudy (mathmate):
This is of the form (a^2+b^2) for which there are no real/rational factors.
Check the question carefully to see if there is a typo.
OpenStudy (anonymous):
(8x+5)(8x-5)
OpenStudy (lynfran):
is that ur answer? (8x+5)(8x-5) if so thats not correct since when we foil it out we will have
8x*8x+8x*-5+5*8x+5*-5 which gives
64x^2 -40x +40x -25
64x^2-25 ...
OpenStudy (anonymous):
Yeah I agree with @LynFran
(8x+5)(8x−5)
=(8x+5)(8x+−5)
=(8x)(8x)+(8x)(−5)+(5)(8x)+(5)(−5)
=64x^2−40x+40x−25
=64x^2−25
OpenStudy (anonymous):
Hmmm...so what should I do?
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OpenStudy (anonymous):
Well, I don't think 64x^2+25 can be factored. Don't judge me...thats my perspective :|
OpenStudy (anonymous):
What if we used the quad formula?
OpenStudy (anonymous):
Hold on...let me solve it.
OpenStudy (anonymous):
i got x=-5/8 or x=5/8
OpenStudy (anonymous):
I got 64x^27 :O
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OpenStudy (anonymous):
Ugh! I don't know what to do haha
OpenStudy (anonymous):
Are you sure this is the question? :O Even no calculator could solve it!