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zalisa [80]
3 years ago
8

Which statement is true about this quadratic equation?

Mathematics
1 answer:
Masteriza [31]3 years ago
8 0

Answer:

There are two real roots because b²>4ac

in the equation, b²= 9² = 81.

4ac = 4×-4×-12= 72

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In the first urn, we have 4 balls, and all of them are different, as they have different labels, so the group of two red balls r1 and r2 is different from the group of red balls r2 and r3.

The same thing occurs in the second urn, as all balls have different labels.

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