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Mathematics 14 Online
alones (alones):

..............................................

alones (alones):

Solve this quadratic equation using the quadratic formula. \[x^2 + 8x - 5 = 0\]

alones (alones):

My answer is

OpenStudy (latinc):

\[\alpha+\pi*\]

alones (alones):

Oka\[\frac{ -4+\sqrt{21} }{ 2 }, \frac{ -4-\sqrt{21} }{ 2 }\]

Directrix (directrix):

I did not get that. Let me see why I did not get a 2 in the denominator.

alones (alones):

Actually 'm not sure about my denominator neither.

Directrix (directrix):

>>Simplify by dividing the denominator and -4 by 2. That won't give a correct answer unless there is a factor of 2 in √21 .

OpenStudy (latinc):

x^2 = 1 so 2*1 = 2 for your denominator

Directrix (directrix):

Let's start from the beginning.

alones (alones):

Suree

Directrix (directrix):

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