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Mathematics 21 Online
OpenStudy (anonymous):

What are the solutions of 4x^2 – 3x – 5 = 0?

OpenStudy (earthcitizen):

check this out http://www.wolframalpha.com/input/?i=4x^2+%E2%80%93+3x+%E2%80%93+5+%3D+0

OpenStudy (anonymous):

I don't get it

OpenStudy (earthcitizen):

an equation ike this can be solve in 3 ways. First, by quadratic formula. Second, by completing the square and lastly by fatorisation.

OpenStudy (anonymous):

is it 3-radical 89/8

OpenStudy (anonymous):

3+-radical 89/8

OpenStudy (anonymous):

\[x=\frac{1}{8} \left(3\pm \sqrt{89}\right) \]

OpenStudy (earthcitizen):

\[(3 \pm \sqrt{89})/8\]

OpenStudy (anonymous):

I got it now!!

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