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Which function has zeros of -4 and 2?

O a
O
D
Oc
Od
f(x)=x² +7x-8
g(x)=x²-7x-8

Which function has zeros of -4 and 2? O a O D Oc Od f(x)=x² +7x-8 g(x)=x²-7x-8-example-1
User Driechel
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1 Answer

4 votes

Final answer:

The function with zeros of -4 and 2 is g(x)=x^2-2x-8. It is derived from factors (x + 4) and (x - 2) that make the function zero.

Step-by-step explanation:

The function that has zeros of -4 and 2 is represented by the factors (x + 4) and (x - 2), which when multiplied together give a quadratic equation. A zero of a function is a value of x that makes the function equal to zero. So we are looking for a quadratic function of the form:

f(x) = a(x + 4)(x - 2)

Expanding this product, we have:

f(x) = a(x^2 - 2x + 4x - 8)

f(x) = a(x^2 + 2x - 8)

To match this form with the given options, we can set a = 1 (since the leading coefficient is not specified and can be assumed to be 1 for simplicity). Therefore, when a = 1, the function becomes:

f(x) = x^2 + 2x - 8

This function simplifies to the given option g(x)=x^2-2x-8, which has the required zeros of -4 and 2.

User Ghashi
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