x^2+7x+12=34

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Solution for x^2+7x+12=34 equation:


Simplifying
x2 + 7x + 12 = 34

Reorder the terms:
12 + 7x + x2 = 34

Solving
12 + 7x + x2 = 34

Solving for variable 'x'.

Reorder the terms:
12 + -34 + 7x + x2 = 34 + -34

Combine like terms: 12 + -34 = -22
-22 + 7x + x2 = 34 + -34

Combine like terms: 34 + -34 = 0
-22 + 7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '22' to each side of the equation.
-22 + 7x + 22 + x2 = 0 + 22

Reorder the terms:
-22 + 22 + 7x + x2 = 0 + 22

Combine like terms: -22 + 22 = 0
0 + 7x + x2 = 0 + 22
7x + x2 = 0 + 22

Combine like terms: 0 + 22 = 22
7x + x2 = 22

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = 22 + 12.25

Reorder the terms:
12.25 + 7x + x2 = 22 + 12.25

Combine like terms: 22 + 12.25 = 34.25
12.25 + 7x + x2 = 34.25

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = 34.25

Calculate the square root of the right side: 5.852349955

Break this problem into two subproblems by setting 
(x + 3.5) equal to 5.852349955 and -5.852349955.

Subproblem 1

x + 3.5 = 5.852349955 Simplifying x + 3.5 = 5.852349955 Reorder the terms: 3.5 + x = 5.852349955 Solving 3.5 + x = 5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 5.852349955 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 5.852349955 + -3.5 x = 5.852349955 + -3.5 Combine like terms: 5.852349955 + -3.5 = 2.352349955 x = 2.352349955 Simplifying x = 2.352349955

Subproblem 2

x + 3.5 = -5.852349955 Simplifying x + 3.5 = -5.852349955 Reorder the terms: 3.5 + x = -5.852349955 Solving 3.5 + x = -5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -5.852349955 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -5.852349955 + -3.5 x = -5.852349955 + -3.5 Combine like terms: -5.852349955 + -3.5 = -9.352349955 x = -9.352349955 Simplifying x = -9.352349955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.352349955, -9.352349955}

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