4x^2+8x+4=33

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Solution for 4x^2+8x+4=33 equation:


Simplifying
4x2 + 8x + 4 = 33

Reorder the terms:
4 + 8x + 4x2 = 33

Solving
4 + 8x + 4x2 = 33

Solving for variable 'x'.

Reorder the terms:
4 + -33 + 8x + 4x2 = 33 + -33

Combine like terms: 4 + -33 = -29
-29 + 8x + 4x2 = 33 + -33

Combine like terms: 33 + -33 = 0
-29 + 8x + 4x2 = 0

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

Divide each side by '4'.
-7.25 + 2x + x2 = 0

Move the constant term to the right:

Add '7.25' to each side of the equation.
-7.25 + 2x + 7.25 + x2 = 0 + 7.25

Reorder the terms:
-7.25 + 7.25 + 2x + x2 = 0 + 7.25

Combine like terms: -7.25 + 7.25 = 0.00
0.00 + 2x + x2 = 0 + 7.25
2x + x2 = 0 + 7.25

Combine like terms: 0 + 7.25 = 7.25
2x + x2 = 7.25

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 7.25 + 1

Reorder the terms:
1 + 2x + x2 = 7.25 + 1

Combine like terms: 7.25 + 1 = 8.25
1 + 2x + x2 = 8.25

Factor a perfect square on the left side:
(x + 1)(x + 1) = 8.25

Calculate the square root of the right side: 2.872281323

Break this problem into two subproblems by setting 
(x + 1) equal to 2.872281323 and -2.872281323.

Subproblem 1

x + 1 = 2.872281323 Simplifying x + 1 = 2.872281323 Reorder the terms: 1 + x = 2.872281323 Solving 1 + x = 2.872281323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 2.872281323 + -1 Combine like terms: 1 + -1 = 0 0 + x = 2.872281323 + -1 x = 2.872281323 + -1 Combine like terms: 2.872281323 + -1 = 1.872281323 x = 1.872281323 Simplifying x = 1.872281323

Subproblem 2

x + 1 = -2.872281323 Simplifying x + 1 = -2.872281323 Reorder the terms: 1 + x = -2.872281323 Solving 1 + x = -2.872281323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -2.872281323 + -1 Combine like terms: 1 + -1 = 0 0 + x = -2.872281323 + -1 x = -2.872281323 + -1 Combine like terms: -2.872281323 + -1 = -3.872281323 x = -3.872281323 Simplifying x = -3.872281323

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.872281323, -3.872281323}

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