Discriminant Watch

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You
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Report Thread starter 14 years ago
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I know that the discriminant is b squared minus 4ac, but when the question is:

What is the discriminant of 3x^2 -6x + 2 =0, what is the answer?
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BloodyValentine
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Report 14 years ago
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36-24 = 12
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Perplexed
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(Original post by You)
I know that the discriminant is b squared minus 4ac, but when the question is:

What is the discriminant of 3x^2 -6x + 2 =0, what is the answer?
The general form:
y = ax^2 + bx + c

In this case:
0 = 3x^2 - 6x + 2
a = 3
b = -6
c = 2

The discriminant is:
b^2 - 4ac
= (-6)^2 - 4*3*2
= 36 - 24
= 12
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