3x^2+12x+k=0

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Solution for 3x^2+12x+k=0 equation: 


Simplifying
3x2 + 12x + k = 0

Reorder the terms:
k + 12x + 3x2 = 0

Solving
k + 12x + 3x2 = 0

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Add '-12x' to each side of the equation.
k + 12x + -12x + 3x2 = 0 + -12x

Combine like terms: 12x + -12x = 0
k + 0 + 3x2 = 0 + -12x
k + 3x2 = 0 + -12x
Remove the zero:
k + 3x2 = -12x

Add '-3x2' to each side of the equation.
k + 3x2 + -3x2 = -12x + -3x2

Combine like terms: 3x2 + -3x2 = 0
k + 0 = -12x + -3x2
k = -12x + -3x2

Simplifying
k = -12x + -3x2

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