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OpenStudy (anonymous):
how many real solutions if any?
OpenStudy (anonymous):
\[-7x^2 + 2x -4 = 0 \]
OpenStudy (anonymous):
The discriminant is given by:
\[b^2 - 4ac > 0\]
OpenStudy (anonymous):
\[ax^2 + bx + c = 0\]
OpenStudy (anonymous):
Can you match up a, b and c with the coefficients of your equation?
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OpenStudy (anonymous):
how many real solutions?
OpenStudy (anonymous):
i or 2 or 2 imaginary
OpenStudy (anonymous):
2
OpenStudy (anonymous):
You will retrieve 2 distinct real roots
OpenStudy (lgbasallote):
@QRAwarrior discriminant is just \(b^2 - 4ac\) ^_^ the > 0 thingies are used to find how many roots the equation has..the question is asking for the value of the discriminant
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OpenStudy (anonymous):
Oops
OpenStudy (anonymous):
No but he asked how many roots
OpenStudy (anonymous):
As well
OpenStudy (lgbasallote):
oh..i just looked at the main question lol..carry on
OpenStudy (anonymous):
@lgbasallote
Would you mind helping me with my question after? I think I gave the open poster sufficient amounts of help
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OpenStudy (anonymous):
can u give me the final answer?
OpenStudy (anonymous):
I'm terrible at math I think someone else can really help you i'm so so sorry =-(
OpenStudy (anonymous):
Sure
OpenStudy (anonymous):
\[-7x^2 + 2x -4 = 0, then\]
b = 2, a = -7, c = -4
Now, can you work out the discriminant? All you have to do is sub in the values into the following equation: