3x^2-15x+72=0

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Solution for 3x^2-15x+72=0 equation:


Simplifying
3x2 + -15x + 72 = 0

Reorder the terms:
72 + -15x + 3x2 = 0

Solving
72 + -15x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(24 + -5x + x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(24 + -5x + x2)' equal to zero and attempt to solve: Simplifying 24 + -5x + x2 = 0 Solving 24 + -5x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-24' to each side of the equation. 24 + -5x + -24 + x2 = 0 + -24 Reorder the terms: 24 + -24 + -5x + x2 = 0 + -24 Combine like terms: 24 + -24 = 0 0 + -5x + x2 = 0 + -24 -5x + x2 = 0 + -24 Combine like terms: 0 + -24 = -24 -5x + x2 = -24 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = -24 + 6.25 Reorder the terms: 6.25 + -5x + x2 = -24 + 6.25 Combine like terms: -24 + 6.25 = -17.75 6.25 + -5x + x2 = -17.75 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = -17.75 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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