4x^2-16x+72=0

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Solution for 4x^2-16x+72=0 equation:


Simplifying
4x2 + -16x + 72 = 0

Reorder the terms:
72 + -16x + 4x2 = 0

Solving
72 + -16x + 4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4'.
4(18 + -4x + x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(18 + -4x + x2)' equal to zero and attempt to solve: Simplifying 18 + -4x + x2 = 0 Solving 18 + -4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-18' to each side of the equation. 18 + -4x + -18 + x2 = 0 + -18 Reorder the terms: 18 + -18 + -4x + x2 = 0 + -18 Combine like terms: 18 + -18 = 0 0 + -4x + x2 = 0 + -18 -4x + x2 = 0 + -18 Combine like terms: 0 + -18 = -18 -4x + x2 = -18 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = -18 + 4 Reorder the terms: 4 + -4x + x2 = -18 + 4 Combine like terms: -18 + 4 = -14 4 + -4x + x2 = -14 Factor a perfect square on the left side: (x + -2)(x + -2) = -14 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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