Given f (x) = 2 x + 9 f (x) = 15 x=

Mathematics

1 answer:

Elina [12.6K]2 years ago

6 0

Answer:

Step-by-step explanation:

15 minus 9 equals 6. 6 divided by 2 equals 3.

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Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.

alexira [117]

Answer:

Option B

Step-by-step explanation:

Given quadratic equation is,

12a² + 9a + 7 = 0

By comparing this equation with standard quadratic equation,

hx² + kx + c = 0

h = 12, k = 9 and c = 7

By using quadratic formula,

a = $\frac{-k\pm\sqrt{k^2-4hc}}{2h}$

= $\frac{-9\pm\sqrt{9^2-4(12)(7)}}{2(12)}$

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= $\frac{-9\pm i\sqrt{255}}{24}$

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Therefore, Option B will be the correct option.

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melomori [17]

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