x^2+14.5x+7=0

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Solution for x^2+14.5x+7=0 equation:


Simplifying
x2 + 14.5x + 7 = 0

Reorder the terms:
7 + 14.5x + x2 = 0

Solving
7 + 14.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + 14.5x + -7 + x2 = 0 + -7

Reorder the terms:
7 + -7 + 14.5x + x2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 14.5x + x2 = 0 + -7
14.5x + x2 = 0 + -7

Combine like terms: 0 + -7 = -7
14.5x + x2 = -7

The x term is 14.5x.  Take half its coefficient (7.25).
Square it (52.5625) and add it to both sides.

Add '52.5625' to each side of the equation.
14.5x + 52.5625 + x2 = -7 + 52.5625

Reorder the terms:
52.5625 + 14.5x + x2 = -7 + 52.5625

Combine like terms: -7 + 52.5625 = 45.5625
52.5625 + 14.5x + x2 = 45.5625

Factor a perfect square on the left side:
(x + 7.25)(x + 7.25) = 45.5625

Calculate the square root of the right side: 6.75

Break this problem into two subproblems by setting 
(x + 7.25) equal to 6.75 and -6.75.

Subproblem 1

x + 7.25 = 6.75 Simplifying x + 7.25 = 6.75 Reorder the terms: 7.25 + x = 6.75 Solving 7.25 + x = 6.75 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.25' to each side of the equation. 7.25 + -7.25 + x = 6.75 + -7.25 Combine like terms: 7.25 + -7.25 = 0.00 0.00 + x = 6.75 + -7.25 x = 6.75 + -7.25 Combine like terms: 6.75 + -7.25 = -0.5 x = -0.5 Simplifying x = -0.5

Subproblem 2

x + 7.25 = -6.75 Simplifying x + 7.25 = -6.75 Reorder the terms: 7.25 + x = -6.75 Solving 7.25 + x = -6.75 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.25' to each side of the equation. 7.25 + -7.25 + x = -6.75 + -7.25 Combine like terms: 7.25 + -7.25 = 0.00 0.00 + x = -6.75 + -7.25 x = -6.75 + -7.25 Combine like terms: -6.75 + -7.25 = -14 x = -14 Simplifying x = -14

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.5, -14}

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