Which of the following represents the zeros of f(x) = x3 - 12x2 + 41x - 42?
Solution:
It is given that
Function f(x) = x3 - 12x2 + 41x - 42
Using the synthetic division we get,
So we get
(x - 2)(x2 - 10x + 21) = 0
Splitting the middle term
(x - 2)(x2 - 3x - 7x + 21) = 0
(x - 2)[x(x - 3) - 7(x - 3)] = 0
We get,
(x - 2)(x - 3)(x - 7) = 0
Here
x = 2, x = 3, and x = 7
Therefore, 2, 3 and 7 represent the zeros of f(x) = x3 - 12x2 + 41x - 42.
Which of the following represents the zeros of f(x) = x3 - 12x2 + 41x - 42?
Summary:
2, 3 and 7 represent the zeros of f(x) = x3 - 12x2 + 41x - 42.
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