HiSET: Math : Factor a quadratic expression to reveal the zeros of the function it defines

Study concepts, example questions & explanations for HiSET: Math

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Example Questions

Example Question #1 : Factor A Quadratic Expression To Reveal The Zeros Of The Function It Defines

A quadratic function has two zeroes, 3 and 7. What could this function be?

Possible Answers:

None of the other choices gives the correct response.

Correct answer:

Explanation:

A polynomial function with zeroes 3 and 7 has as its factors and . The function is given to be quadratic, so this function is

.

Apply the FOIL method to rewrite the polynomial:

Collect like terms:

,

the correct choice.

 

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