4x^2+32x+57=0

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Solution for 4x^2+32x+57=0 equation:


Simplifying
4x2 + 32x + 57 = 0

Reorder the terms:
57 + 32x + 4x2 = 0

Solving
57 + 32x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
14.25 + 8x + x2 = 0

Move the constant term to the right:

Add '-14.25' to each side of the equation.
14.25 + 8x + -14.25 + x2 = 0 + -14.25

Reorder the terms:
14.25 + -14.25 + 8x + x2 = 0 + -14.25

Combine like terms: 14.25 + -14.25 = 0.00
0.00 + 8x + x2 = 0 + -14.25
8x + x2 = 0 + -14.25

Combine like terms: 0 + -14.25 = -14.25
8x + x2 = -14.25

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 = -14.25 + 16

Reorder the terms:
16 + 8x + x2 = -14.25 + 16

Combine like terms: -14.25 + 16 = 1.75
16 + 8x + x2 = 1.75

Factor a perfect square on the left side:
(x + 4)(x + 4) = 1.75

Calculate the square root of the right side: 1.322875656

Break this problem into two subproblems by setting 
(x + 4) equal to 1.322875656 and -1.322875656.

Subproblem 1

x + 4 = 1.322875656 Simplifying x + 4 = 1.322875656 Reorder the terms: 4 + x = 1.322875656 Solving 4 + x = 1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 1.322875656 + -4 Combine like terms: 4 + -4 = 0 0 + x = 1.322875656 + -4 x = 1.322875656 + -4 Combine like terms: 1.322875656 + -4 = -2.677124344 x = -2.677124344 Simplifying x = -2.677124344

Subproblem 2

x + 4 = -1.322875656 Simplifying x + 4 = -1.322875656 Reorder the terms: 4 + x = -1.322875656 Solving 4 + x = -1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -1.322875656 + -4 Combine like terms: 4 + -4 = 0 0 + x = -1.322875656 + -4 x = -1.322875656 + -4 Combine like terms: -1.322875656 + -4 = -5.322875656 x = -5.322875656 Simplifying x = -5.322875656

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.677124344, -5.322875656}

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