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Nina [5.8K]
3 years ago
14

This should be some simple math with some steps but i really need help beause i dont understand the problems

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
6 0
I don’t understand it either
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Use <, =, or > to complete the statement. 0.62 0.16
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The Statement would be: 0.16 < 0.62

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HELP ASAP/ WILL MARK BRAINLYIEST If f(x) = 3x + 2, what is f(5)?
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Ksju [112]

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Step-by-step explanation:

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Write a polynomial function in standard form given the zeros.<br><br> -1/2, -5 + i
Rama09 [41]

Answer:

y = x³ + 10.5x² + 31x + 13

Step-by-step explanation:

Complex roots (roots that have imaginary terms) always come in conjugate pairs.  So if one root is -5 + i, there's another root that's -5 − i.

So the polynomial is:

y = (x + 1/2) (x − (-5 + i)) (x − (-5 − i))

Distributing:

y = (x + 1/2) (x² − (-5 + i)x − (-5 − i)x + (-5 + i)(-5 − i))

y = (x + 1/2) (x² + 5x − ix + 5x + ix + (-5 + i)(-5 − i))

y = (x + 1/2) (x² + 10x + (-5 + i)(-5 − i))

y = (x + 1/2) (x² + 10x + 25 + 5i − 5i − i²)

y = (x + 1/2) (x² + 10x + 25 + 1)

y = (x + 1/2) (x² + 10x + 26)

y = x(x² + 10x + 26) + 1/2(x² + 10x + 26)

y = x³ + 10x² + 26x + 1/2x² + 5x + 13

y = x³ + 10.5x² + 31x + 13

8 0
3 years ago
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