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Which second degree polynomial function f(x) has a lead coefficient of 3 and roots 4 and 1?

f(x) = 3x2 + 5x + 4
f(x) = 3x2 + 15x + 12
f(x) = 3x2 – 5x + 4
f(x) = 3x2 – 15x + 12

User Izalion
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2 Answers

1 vote
It's D I took the test
User DGoran
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For this case we have that the following function complies with the given conditions:


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To prove it, let's find the roots of the polynomial:


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By doing common factor 3 we have:


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Factoring the second degree polynomial we have:


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Then, the solutions are:

Solution 1:


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Solution 2:


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Answer:

A second degree polynomial function f (x) that has a lead coefficient of 3 and roots 4 and 1 is:


f (x) = 3x ^ 2 - 15x + 12

User Leightski
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