4x^2+57x+189=368

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Solution for 4x^2+57x+189=368 equation:


Simplifying
4x2 + 57x + 189 = 368

Reorder the terms:
189 + 57x + 4x2 = 368

Solving
189 + 57x + 4x2 = 368

Solving for variable 'x'.

Reorder the terms:
189 + -368 + 57x + 4x2 = 368 + -368

Combine like terms: 189 + -368 = -179
-179 + 57x + 4x2 = 368 + -368

Combine like terms: 368 + -368 = 0
-179 + 57x + 4x2 = 0

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

Divide each side by '4'.
-44.75 + 14.25x + x2 = 0

Move the constant term to the right:

Add '44.75' to each side of the equation.
-44.75 + 14.25x + 44.75 + x2 = 0 + 44.75

Reorder the terms:
-44.75 + 44.75 + 14.25x + x2 = 0 + 44.75

Combine like terms: -44.75 + 44.75 = 0.00
0.00 + 14.25x + x2 = 0 + 44.75
14.25x + x2 = 0 + 44.75

Combine like terms: 0 + 44.75 = 44.75
14.25x + x2 = 44.75

The x term is 14.25x.  Take half its coefficient (7.125).
Square it (50.765625) and add it to both sides.

Add '50.765625' to each side of the equation.
14.25x + 50.765625 + x2 = 44.75 + 50.765625

Reorder the terms:
50.765625 + 14.25x + x2 = 44.75 + 50.765625

Combine like terms: 44.75 + 50.765625 = 95.515625
50.765625 + 14.25x + x2 = 95.515625

Factor a perfect square on the left side:
(x + 7.125)(x + 7.125) = 95.515625

Calculate the square root of the right side: 9.773209555

Break this problem into two subproblems by setting 
(x + 7.125) equal to 9.773209555 and -9.773209555.

Subproblem 1

x + 7.125 = 9.773209555 Simplifying x + 7.125 = 9.773209555 Reorder the terms: 7.125 + x = 9.773209555 Solving 7.125 + x = 9.773209555 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.125' to each side of the equation. 7.125 + -7.125 + x = 9.773209555 + -7.125 Combine like terms: 7.125 + -7.125 = 0.000 0.000 + x = 9.773209555 + -7.125 x = 9.773209555 + -7.125 Combine like terms: 9.773209555 + -7.125 = 2.648209555 x = 2.648209555 Simplifying x = 2.648209555

Subproblem 2

x + 7.125 = -9.773209555 Simplifying x + 7.125 = -9.773209555 Reorder the terms: 7.125 + x = -9.773209555 Solving 7.125 + x = -9.773209555 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.125' to each side of the equation. 7.125 + -7.125 + x = -9.773209555 + -7.125 Combine like terms: 7.125 + -7.125 = 0.000 0.000 + x = -9.773209555 + -7.125 x = -9.773209555 + -7.125 Combine like terms: -9.773209555 + -7.125 = -16.898209555 x = -16.898209555 Simplifying x = -16.898209555

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.648209555, -16.898209555}

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