4x^2+48x+27=0

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Solution for 4x^2+48x+27=0 equation:


Simplifying
4x2 + 48x + 27 = 0

Reorder the terms:
27 + 48x + 4x2 = 0

Solving
27 + 48x + 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'.
6.75 + 12x + x2 = 0

Move the constant term to the right:

Add '-6.75' to each side of the equation.
6.75 + 12x + -6.75 + x2 = 0 + -6.75

Reorder the terms:
6.75 + -6.75 + 12x + x2 = 0 + -6.75

Combine like terms: 6.75 + -6.75 = 0.00
0.00 + 12x + x2 = 0 + -6.75
12x + x2 = 0 + -6.75

Combine like terms: 0 + -6.75 = -6.75
12x + x2 = -6.75

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 = -6.75 + 36

Reorder the terms:
36 + 12x + x2 = -6.75 + 36

Combine like terms: -6.75 + 36 = 29.25
36 + 12x + x2 = 29.25

Factor a perfect square on the left side:
(x + 6)(x + 6) = 29.25

Calculate the square root of the right side: 5.408326913

Break this problem into two subproblems by setting 
(x + 6) equal to 5.408326913 and -5.408326913.

Subproblem 1

x + 6 = 5.408326913 Simplifying x + 6 = 5.408326913 Reorder the terms: 6 + x = 5.408326913 Solving 6 + x = 5.408326913 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 = 5.408326913 + -6 Combine like terms: 6 + -6 = 0 0 + x = 5.408326913 + -6 x = 5.408326913 + -6 Combine like terms: 5.408326913 + -6 = -0.591673087 x = -0.591673087 Simplifying x = -0.591673087

Subproblem 2

x + 6 = -5.408326913 Simplifying x + 6 = -5.408326913 Reorder the terms: 6 + x = -5.408326913 Solving 6 + x = -5.408326913 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 = -5.408326913 + -6 Combine like terms: 6 + -6 = 0 0 + x = -5.408326913 + -6 x = -5.408326913 + -6 Combine like terms: -5.408326913 + -6 = -11.408326913 x = -11.408326913 Simplifying x = -11.408326913

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.591673087, -11.408326913}

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