3x^2+9x+12=3

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Solution for 3x^2+9x+12=3 equation:


Simplifying
3x2 + 9x + 12 = 3

Reorder the terms:
12 + 9x + 3x2 = 3

Solving
12 + 9x + 3x2 = 3

Solving for variable 'x'.

Reorder the terms:
12 + -3 + 9x + 3x2 = 3 + -3

Combine like terms: 12 + -3 = 9
9 + 9x + 3x2 = 3 + -3

Combine like terms: 3 + -3 = 0
9 + 9x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(3 + 3x + x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(3 + 3x + x2)' equal to zero and attempt to solve: Simplifying 3 + 3x + x2 = 0 Solving 3 + 3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-3' to each side of the equation. 3 + 3x + -3 + x2 = 0 + -3 Reorder the terms: 3 + -3 + 3x + x2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 3x + x2 = 0 + -3 3x + x2 = 0 + -3 Combine like terms: 0 + -3 = -3 3x + x2 = -3 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = -3 + 2.25 Reorder the terms: 2.25 + 3x + x2 = -3 + 2.25 Combine like terms: -3 + 2.25 = -0.75 2.25 + 3x + x2 = -0.75 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = -0.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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