2x^2-24x=72

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Solution for 2x^2-24x=72 equation:


Simplifying
2x2 + -24x = 72

Reorder the terms:
-24x + 2x2 = 72

Solving
-24x + 2x2 = 72

Solving for variable 'x'.

Reorder the terms:
-72 + -24x + 2x2 = 72 + -72

Combine like terms: 72 + -72 = 0
-72 + -24x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-36 + -12x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-36 + -12x + x2)' equal to zero and attempt to solve: Simplifying -36 + -12x + x2 = 0 Solving -36 + -12x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '36' to each side of the equation. -36 + -12x + 36 + x2 = 0 + 36 Reorder the terms: -36 + 36 + -12x + x2 = 0 + 36 Combine like terms: -36 + 36 = 0 0 + -12x + x2 = 0 + 36 -12x + x2 = 0 + 36 Combine like terms: 0 + 36 = 36 -12x + x2 = 36 The x term is -12x. Take half its coefficient (-6). Square it (36) and add it to both sides. Add '36' to each side of the equation. -12x + 36 + x2 = 36 + 36 Reorder the terms: 36 + -12x + x2 = 36 + 36 Combine like terms: 36 + 36 = 72 36 + -12x + x2 = 72 Factor a perfect square on the left side: (x + -6)(x + -6) = 72 Calculate the square root of the right side: 8.485281374 Break this problem into two subproblems by setting (x + -6) equal to 8.485281374 and -8.485281374.

Subproblem 1

x + -6 = 8.485281374 Simplifying x + -6 = 8.485281374 Reorder the terms: -6 + x = 8.485281374 Solving -6 + x = 8.485281374 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 8.485281374 + 6 Combine like terms: -6 + 6 = 0 0 + x = 8.485281374 + 6 x = 8.485281374 + 6 Combine like terms: 8.485281374 + 6 = 14.485281374 x = 14.485281374 Simplifying x = 14.485281374

Subproblem 2

x + -6 = -8.485281374 Simplifying x + -6 = -8.485281374 Reorder the terms: -6 + x = -8.485281374 Solving -6 + x = -8.485281374 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -8.485281374 + 6 Combine like terms: -6 + 6 = 0 0 + x = -8.485281374 + 6 x = -8.485281374 + 6 Combine like terms: -8.485281374 + 6 = -2.485281374 x = -2.485281374 Simplifying x = -2.485281374

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.485281374, -2.485281374}

Solution

x = {14.485281374, -2.485281374}

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