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Sedbober [7]
3 years ago
5

Find the value of the discriminant of each quadratic equation:-2x^2-x-1=0 

Mathematics
1 answer:
Blizzard [7]3 years ago
4 0
\Delta=b^2-4ac\\
\Delta=(-1)^2-4\cdot(-2)\cdot(-1)=1-8=-7
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I don't like these algebra problems which pretend to be geometry.

These are supplementary angles adding to 180 degrees; geometry done.

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3 years ago
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Step-by-step explanation:

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