3x^2+6x=336

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Solution for 3x^2+6x=336 equation:


Simplifying
3x2 + 6x = 336

Reorder the terms:
6x + 3x2 = 336

Solving
6x + 3x2 = 336

Solving for variable 'x'.

Reorder the terms:
-336 + 6x + 3x2 = 336 + -336

Combine like terms: 336 + -336 = 0
-336 + 6x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-112 + 2x + x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-112 + 2x + x2)' equal to zero and attempt to solve: Simplifying -112 + 2x + x2 = 0 Solving -112 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '112' to each side of the equation. -112 + 2x + 112 + x2 = 0 + 112 Reorder the terms: -112 + 112 + 2x + x2 = 0 + 112 Combine like terms: -112 + 112 = 0 0 + 2x + x2 = 0 + 112 2x + x2 = 0 + 112 Combine like terms: 0 + 112 = 112 2x + x2 = 112 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 112 + 1 Reorder the terms: 1 + 2x + x2 = 112 + 1 Combine like terms: 112 + 1 = 113 1 + 2x + x2 = 113 Factor a perfect square on the left side: (x + 1)(x + 1) = 113 Calculate the square root of the right side: 10.630145813 Break this problem into two subproblems by setting (x + 1) equal to 10.630145813 and -10.630145813.

Subproblem 1

x + 1 = 10.630145813 Simplifying x + 1 = 10.630145813 Reorder the terms: 1 + x = 10.630145813 Solving 1 + x = 10.630145813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 10.630145813 + -1 Combine like terms: 1 + -1 = 0 0 + x = 10.630145813 + -1 x = 10.630145813 + -1 Combine like terms: 10.630145813 + -1 = 9.630145813 x = 9.630145813 Simplifying x = 9.630145813

Subproblem 2

x + 1 = -10.630145813 Simplifying x + 1 = -10.630145813 Reorder the terms: 1 + x = -10.630145813 Solving 1 + x = -10.630145813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -10.630145813 + -1 Combine like terms: 1 + -1 = 0 0 + x = -10.630145813 + -1 x = -10.630145813 + -1 Combine like terms: -10.630145813 + -1 = -11.630145813 x = -11.630145813 Simplifying x = -11.630145813

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.630145813, -11.630145813}

Solution

x = {9.630145813, -11.630145813}

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