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21-12-2020
Mathematics

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For what real values of does the quadratic 12x^2+kx+27=0 have nonreal roots

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21-12-2020

Answer:

k<±36

Step-by-step explanation:

Δ<0 (no real roots)

b²-4ac<0

k²-4x12x27<0

k²-1296<0

k²<1296

k<±36

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