When looking at a graph of a quadratic, how can you tell the solutions are complex numbers?

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APerson1888 APerson1888

02-01-2021
Mathematics

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When looking at a graph of a quadratic, how can you tell the solutions are complex numbers?

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clarch19 clarch19 · Answer 1 · 2021-01-02T18:32:04+01:00

clarch19 clarch19

02-01-2021

Answer:

the solutions are where the parabola crosses the x-axis; therefore, if the parabola does not cross the x-axis then the solutions can be considered to be imaginary (for example, the square root of a negative)

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