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mr_godi [17]
3 years ago
8

Which two values of x are roots of the polynomial below? x2 + 3x - 5

Mathematics
1 answer:
lesya692 [45]3 years ago
3 0

Answer:

Step-by-step explanation:

The roots are the values of x for which x² + 3x - 5 = 0.

Quadratic formula:

x = [-3±√(3²-4(1)(-5))]/(2·1) = [-3±√29]/2

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In the diagram, the shorter leg would be 18/2 = 9. x is the longer leg, so x would be 9√3. y is the hypotenuse, so y would be 9*2 = 18.

x (longer leg) = 9 * √3

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\boxed {D)~x= 9 \sqrt 3,~ y = 18}

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miskamm [114]

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Answer:

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