Using the discriminant how many times does the graph of this equation cross the x-axis 5x squared -10x-2 equals 0?

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Answer

1272854

2026-05-19 12:10

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Discriminant = (-10)2 - 4*5*(-2) = 100 + 40 > 0

So the quadratic has two real roots ie it crosses the x-axis twice.

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