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azamat
2 years ago
5

The quadratic equation 4x^2 + 12x + k = 0 has equal roots. Find the value of k.

Mathematics
1 answer:
cestrela7 [59]2 years ago
3 0

Answer:Sephardic.org

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Please help, see attachment for equation!
Alekssandra [29.7K]

Answer:

The answer to your question is the last option

Step-by-step explanation:

Quadratic equation

                                2 = - x + x² - 4

Order the equation from the highest power to the lowest power. Do not consider 2 because it is not consider in the options given.

                               x² - x - 4  = 0

Identify a, b and c

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    a = 1    b = -1    c = - 6      

Substitution              

                              \frac{-(-1) +- \sqrt{(-1)^{2} - 4(1)((-4)}}{2(1)}

3 0
3 years ago
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