Question

If a polynomial function f(x) has roots 3 and V7, what must also be a root of f(x)?
0 -7
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Answer 1

Answer:

- $\sqrt{7}$

Step-by-step explanation:

Radical roots occur as conjugate pairs.

Thus if x = $\sqrt{7}$ is a root then - $\sqrt{7}$ is also a root

Answer 2

Answer:

A) - $\sqrt{7$

Step-by-step explanation: