2x^2+14x-9=-4x+27x+54

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Solution for 2x^2+14x-9=-4x+27x+54 equation:


Simplifying
2x2 + 14x + -9 = -4x + 27x + 54

Reorder the terms:
-9 + 14x + 2x2 = -4x + 27x + 54

Reorder the terms:
-9 + 14x + 2x2 = 54 + -4x + 27x

Combine like terms: -4x + 27x = 23x
-9 + 14x + 2x2 = 54 + 23x

Solving
-9 + 14x + 2x2 = 54 + 23x

Solving for variable 'x'.

Reorder the terms:
-9 + -54 + 14x + -23x + 2x2 = 54 + 23x + -54 + -23x

Combine like terms: -9 + -54 = -63
-63 + 14x + -23x + 2x2 = 54 + 23x + -54 + -23x

Combine like terms: 14x + -23x = -9x
-63 + -9x + 2x2 = 54 + 23x + -54 + -23x

Reorder the terms:
-63 + -9x + 2x2 = 54 + -54 + 23x + -23x

Combine like terms: 54 + -54 = 0
-63 + -9x + 2x2 = 0 + 23x + -23x
-63 + -9x + 2x2 = 23x + -23x

Combine like terms: 23x + -23x = 0
-63 + -9x + 2x2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-31.5 + -4.5x + x2 = 0

Move the constant term to the right:

Add '31.5' to each side of the equation.
-31.5 + -4.5x + 31.5 + x2 = 0 + 31.5

Reorder the terms:
-31.5 + 31.5 + -4.5x + x2 = 0 + 31.5

Combine like terms: -31.5 + 31.5 = 0.0
0.0 + -4.5x + x2 = 0 + 31.5
-4.5x + x2 = 0 + 31.5

Combine like terms: 0 + 31.5 = 31.5
-4.5x + x2 = 31.5

The x term is -4.5x.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5x + 5.0625 + x2 = 31.5 + 5.0625

Reorder the terms:
5.0625 + -4.5x + x2 = 31.5 + 5.0625

Combine like terms: 31.5 + 5.0625 = 36.5625
5.0625 + -4.5x + x2 = 36.5625

Factor a perfect square on the left side:
(x + -2.25)(x + -2.25) = 36.5625

Calculate the square root of the right side: 6.046693311

Break this problem into two subproblems by setting 
(x + -2.25) equal to 6.046693311 and -6.046693311.

Subproblem 1

x + -2.25 = 6.046693311 Simplifying x + -2.25 = 6.046693311 Reorder the terms: -2.25 + x = 6.046693311 Solving -2.25 + x = 6.046693311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 6.046693311 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 6.046693311 + 2.25 x = 6.046693311 + 2.25 Combine like terms: 6.046693311 + 2.25 = 8.296693311 x = 8.296693311 Simplifying x = 8.296693311

Subproblem 2

x + -2.25 = -6.046693311 Simplifying x + -2.25 = -6.046693311 Reorder the terms: -2.25 + x = -6.046693311 Solving -2.25 + x = -6.046693311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -6.046693311 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -6.046693311 + 2.25 x = -6.046693311 + 2.25 Combine like terms: -6.046693311 + 2.25 = -3.796693311 x = -3.796693311 Simplifying x = -3.796693311

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.296693311, -3.796693311}

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