angelwings996
What is a polynomial function in standard form with zeros 1, 2, -3 and -3?
a. g(x) = x^4 + 3x^3 - 7x^2 - 15x + 18
b. g(x) = x^4 + 3x^3 - 7x^2 + 2x + 18
c. g(x) = x^4 - 3x^3 + 7x^2 + 15x + 18
d. g(x) = x^4 - 3x^3 -7x^2 + 15x + 18
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Koikkara
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not sure....guess <<C >>.
precal
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|dw:1357249454342:dw|multiply it all out
Koikkara
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zeros at 0,4 and -1, means that
P(x) = (x)(x-4)(x+1) = x(x² -3x -4)
= x³ -3x² - 4x
that's it! ;
pathosdebater
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Definitely A
angelwings996
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Lol okay, how did you get that ?
precal
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|dw:1357249983295:dw|
pathosdebater
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I graphed it. The points where the graph intersected with x = 0 are your answers.
pathosdebater
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angelwings996
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Oh, I see. Okay thank you!
precal
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|dw:1357250010393:dw|I expanded it
precal
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|dw:1357250085287:dw|
angelwings996
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Okay thanks you guys, I get it now (:
precal
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hope that helps
angelwings996
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It does! Thanks (:
precal
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yw