Algebra stuff.

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Algebra stuff.

Postby DoxC on Sun Mar 23, 2014 5:07 am

I know this isn't the place to be asking about algebra but ill ask anyway.

Find the value of m so that only one value of x satisfies the equation:
4x^2 – 8x + m = 0


how i do dis?
:?

all ive done is divide the whole equation by 4 to get
x^2 - 4x + m/4 = 0
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Re: Algebra stuff.

Postby Vicpop on Sun Mar 23, 2014 5:23 am

look at the quadratic formula. the only way you can have it so that you get one solution is if sqrt(b^2 - 4ac) = 0, that is b^2-4ac = 0. hope this helps
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Re: Algebra stuff.

Postby DoxC on Sun Mar 23, 2014 5:28 am

oh now i get it, so the discriminant was what is should have looked for
thanks Vicpop
:D
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Re: Algebra stuff.

Postby Knights on Sun Mar 23, 2014 5:56 pm

Math questions on Interlopers!? Next gen!
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Re: Algebra stuff.

Postby kaya67 on Mon Oct 20, 2014 9:17 am

Happy that the site is still running, let alone popular :)
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