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Licemer1 [7]
3 years ago
15

If a polynomial function f(x) has roots 3 and square root of 7, what must also be a root of f(x)

Mathematics
2 answers:
givi [52]3 years ago
5 0

Answer:

-√7 = -2.64

Step-by-step explanation:

The polynomial function has roots. The first root is 3 and the second is √7.

When we have a square root that means that we get two roots from the same number but one is negative and the other is positive. For example, if we have:

√x² = ±x

Because we can have:

(-x)² = x², or

(x)²=x².

So a square root always gives us two answers, one negative and the other positive.

Neko [114]3 years ago
3 0

Answer:

x = - \sqrt{7}

Step-by-step explanation:

Radical roots occur in pairs, that is

x = \sqrt{7} is a root then so is x = - \sqrt{7}

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