3 years ago

Give an example of a quadratic with complex roots. Explain how you know it has complex roots.

1 answer:

5 0

2x^2 + x + 3=0 has only complex roots.

The determinant is 1-4*2*3 = -23

-23 (or any determinant) is the part under the square root sign, If that determinant is negative, knowing you cannot take the square root of a negative number, we know the answers must be complex.

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9514 1404 393

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3 years ago

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spin [16.1K]

113.1

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4 0

3 years ago

find the value of r so that the line that passes through (5, r) and (2, -3) has a slope of 4/3. a. 1 b. 7 c. (13/9) d. -1

Margaret [11]

Slope = (-3 - r) / (2 - 5)

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