26-11-2020
Mathematics

contestada

The roots of 3x^2+kx+12=0 are equal, find k.

Respuesta :

Izzy1974 Izzy1974

26-11-2020

Answer:

Step-by-step explanation:

3x^2+kx+12=0

k= -3x-12/x

Answer Link

xenia168 xenia168

26-11-2020

Answer:

k = 12

Step-by-step explanation:

3(x² + kx + 2²) = 3(x² + ____x + 4) = 3(x² + 4x + 4) = 3x² + 12x + 12 ⇒ k = 12

Answer Link

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