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valentina_108 [34]
4 years ago
9

According to the Rational Root Theorem, which number is a potential root of f(x) = 9x8 + 9x6 – 12x + 7?

Mathematics
2 answers:
MrRa [10]4 years ago
5 0
7/3 is the answer to your question
telo118 [61]4 years ago
3 0

Answer:

All the potential root of f(x) are \pm 1,\pm7, \pm \frac{1}{3},\pm \frac{7}{3}, \pm \frac{1}{9},\pm \frac{7}{9}.

Step-by-step explanation:

According to the rational root theorem, all the potential root of f(x) are defined as

x=\pm\frac{p}{q}

Where, p is factor of constant term and q is factor of leading coefficient.

The given function is

f(x)=9x^8+9x^6-12x+7

Here, constant term is 7 and leading coefficient is 9.

Factors of 7 are ±1, ±7 and the factors of 9 are ±1, ±3, ±9.

Using rational root theorem, all the potential root of f(x) are

x=\pm 1,\pm7, \pm \frac{1}{3},\pm \frac{7}{3}, \pm \frac{1}{9},\pm \frac{7}{9}

Therefore all the potential root of f(x) are \pm 1,\pm7, \pm \frac{1}{3},\pm \frac{7}{3}, \pm \frac{1}{9},\pm \frac{7}{9}.

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