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lisabon 2012 [21]
3 years ago
12

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

Mathematics
2 answers:
luda_lava [24]3 years ago
6 0
It's D I took the test
9966 [12]3 years ago
5 0

For this case we have that the following function complies with the given conditions:

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

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

3x ^ 2 - 15x + 12 = 0

By doing common factor 3 we have:

3 (x ^ 2 - 5x + 4) = 0

Factoring the second degree polynomial we have:

3 (x-1) (x-4) = 0

Then, the solutions are:

Solution 1:

x-1 = 0\\x = 1

Solution 2:

x-4 = 0\\x = 4

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

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