Naue0mlephloeS Naue0mlephloeS

14-10-2016
Mathematics

Answered

Which of the following represents the zeros of f(x) = 3x^3 − 10x^2 − 81x + 28?

A7, -4, 1/3
B7, -4, -1/3
C7, 4, 1/3
D7, 4, -1/3

Verified Answer :

Edufirst Edufirst

17-10-2016

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.

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