4x^2+32x+23=x+7

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Solution for 4x^2+32x+23=x+7 equation:


Simplifying
4x2 + 32x + 23 = x + 7

Reorder the terms:
23 + 32x + 4x2 = x + 7

Reorder the terms:
23 + 32x + 4x2 = 7 + x

Solving
23 + 32x + 4x2 = 7 + x

Solving for variable 'x'.

Reorder the terms:
23 + -7 + 32x + -1x + 4x2 = 7 + x + -7 + -1x

Combine like terms: 23 + -7 = 16
16 + 32x + -1x + 4x2 = 7 + x + -7 + -1x

Combine like terms: 32x + -1x = 31x
16 + 31x + 4x2 = 7 + x + -7 + -1x

Reorder the terms:
16 + 31x + 4x2 = 7 + -7 + x + -1x

Combine like terms: 7 + -7 = 0
16 + 31x + 4x2 = 0 + x + -1x
16 + 31x + 4x2 = x + -1x

Combine like terms: x + -1x = 0
16 + 31x + 4x2 = 0

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

Divide each side by '4'.
4 + 7.75x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 7.75x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + 7.75x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 7.75x + x2 = 0 + -4
7.75x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
7.75x + x2 = -4

The x term is 7.75x.  Take half its coefficient (3.875).
Square it (15.015625) and add it to both sides.

Add '15.015625' to each side of the equation.
7.75x + 15.015625 + x2 = -4 + 15.015625

Reorder the terms:
15.015625 + 7.75x + x2 = -4 + 15.015625

Combine like terms: -4 + 15.015625 = 11.015625
15.015625 + 7.75x + x2 = 11.015625

Factor a perfect square on the left side:
(x + 3.875)(x + 3.875) = 11.015625

Calculate the square root of the right side: 3.318979512

Break this problem into two subproblems by setting 
(x + 3.875) equal to 3.318979512 and -3.318979512.

Subproblem 1

x + 3.875 = 3.318979512 Simplifying x + 3.875 = 3.318979512 Reorder the terms: 3.875 + x = 3.318979512 Solving 3.875 + x = 3.318979512 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.875' to each side of the equation. 3.875 + -3.875 + x = 3.318979512 + -3.875 Combine like terms: 3.875 + -3.875 = 0.000 0.000 + x = 3.318979512 + -3.875 x = 3.318979512 + -3.875 Combine like terms: 3.318979512 + -3.875 = -0.556020488 x = -0.556020488 Simplifying x = -0.556020488

Subproblem 2

x + 3.875 = -3.318979512 Simplifying x + 3.875 = -3.318979512 Reorder the terms: 3.875 + x = -3.318979512 Solving 3.875 + x = -3.318979512 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.875' to each side of the equation. 3.875 + -3.875 + x = -3.318979512 + -3.875 Combine like terms: 3.875 + -3.875 = 0.000 0.000 + x = -3.318979512 + -3.875 x = -3.318979512 + -3.875 Combine like terms: -3.318979512 + -3.875 = -7.193979512 x = -7.193979512 Simplifying x = -7.193979512

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.556020488, -7.193979512}

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