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ss7ja [257]
3 years ago
8

How do you know a quadratic function has exactly one zero?

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
5 0

Answer:

b)

Step-by-step explanation:

y = x² + 6x + 9 = (x + 3)(x + 3)

(x + 3)(x + 3) = 0, x = - 3,

or

you can find  D =b² - 4ac

y = x² + 6x + 9

a = 1, b = 6, c = 9

D = 6² - 4*1*9 = 36- 36= 0

When D =0, a quadratic function has exactly one zero.

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Answer:

5.27 lb

Step-by-step explanation:

Given that,

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Dividing both sides by 15.81.

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3 years ago
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8 0
3 years ago
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16x2 – 25
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Answer:

A

Step-by-step explanation:

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