4x^2+32x+7=0

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Solution for 4x^2+32x+7=0 equation:


Simplifying
4x2 + 32x + 7 = 0

Reorder the terms:
7 + 32x + 4x2 = 0

Solving
7 + 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'.
1.75 + 8x + x2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + 8x + -1.75 + x2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + 8x + x2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + 8x + x2 = 0 + -1.75
8x + x2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
8x + x2 = -1.75

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 = -1.75 + 16

Reorder the terms:
16 + 8x + x2 = -1.75 + 16

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

Factor a perfect square on the left side:
(x + 4)(x + 4) = 14.25

Calculate the square root of the right side: 3.774917218

Break this problem into two subproblems by setting 
(x + 4) equal to 3.774917218 and -3.774917218.

Subproblem 1

x + 4 = 3.774917218 Simplifying x + 4 = 3.774917218 Reorder the terms: 4 + x = 3.774917218 Solving 4 + x = 3.774917218 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 = 3.774917218 + -4 Combine like terms: 4 + -4 = 0 0 + x = 3.774917218 + -4 x = 3.774917218 + -4 Combine like terms: 3.774917218 + -4 = -0.225082782 x = -0.225082782 Simplifying x = -0.225082782

Subproblem 2

x + 4 = -3.774917218 Simplifying x + 4 = -3.774917218 Reorder the terms: 4 + x = -3.774917218 Solving 4 + x = -3.774917218 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 = -3.774917218 + -4 Combine like terms: 4 + -4 = 0 0 + x = -3.774917218 + -4 x = -3.774917218 + -4 Combine like terms: -3.774917218 + -4 = -7.774917218 x = -7.774917218 Simplifying x = -7.774917218

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.225082782, -7.774917218}

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