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Which of the following represents the zeros of f(x) = 3x^3 − 10x^2 − 81x + 28? A) 7, -4, 1/3 B) 7, -4, -1/3 C) 7, 4, 1/3 D) 7, 4, -1/3
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Mar 14, 2017
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Which of the following represents the zeros of f(x) = 3x^3 − 10x^2 − 81x + 28?
A) 7, -4, 1/3
B) 7, -4, -1/3
C) 7, 4, 1/3
D) 7, 4, -1/3
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Christie
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Option A). 7, -4 and 1/3
To find the zeros you can factor the polynolial into (3x-1)((x+4)(x-7)
Then:
3x -1 =0 => x = 1/3
x+4=0 => x = -4
x-7 =0 => x =7
Those are the three zeros.
Varan Sinayee
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Mar 21, 2017
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Varan Sinayee
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