2x^2+16x+72=0

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


Simplifying
2x2 + 16x + 72 = 0

Reorder the terms:
72 + 16x + 2x2 = 0

Solving
72 + 16x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(36 + 8x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(36 + 8x + x2)' equal to zero and attempt to solve: Simplifying 36 + 8x + x2 = 0 Solving 36 + 8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-36' to each side of the equation. 36 + 8x + -36 + x2 = 0 + -36 Reorder the terms: 36 + -36 + 8x + x2 = 0 + -36 Combine like terms: 36 + -36 = 0 0 + 8x + x2 = 0 + -36 8x + x2 = 0 + -36 Combine like terms: 0 + -36 = -36 8x + x2 = -36 The x term is 8x. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8x + 16 + x2 = -36 + 16 Reorder the terms: 16 + 8x + x2 = -36 + 16 Combine like terms: -36 + 16 = -20 16 + 8x + x2 = -20 Factor a perfect square on the left side: (x + 4)(x + 4) = -20 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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