d^2-14d+22=0

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Solution for d^2-14d+22=0 equation:


Simplifying
d2 + -14d + 22 = 0

Reorder the terms:
22 + -14d + d2 = 0

Solving
22 + -14d + d2 = 0

Solving for variable 'd'.

Begin completing the square.

Move the constant term to the right:

Add '-22' to each side of the equation.
22 + -14d + -22 + d2 = 0 + -22

Reorder the terms:
22 + -22 + -14d + d2 = 0 + -22

Combine like terms: 22 + -22 = 0
0 + -14d + d2 = 0 + -22
-14d + d2 = 0 + -22

Combine like terms: 0 + -22 = -22
-14d + d2 = -22

The d term is -14d.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14d + 49 + d2 = -22 + 49

Reorder the terms:
49 + -14d + d2 = -22 + 49

Combine like terms: -22 + 49 = 27
49 + -14d + d2 = 27

Factor a perfect square on the left side:
(d + -7)(d + -7) = 27

Calculate the square root of the right side: 5.196152423

Break this problem into two subproblems by setting 
(d + -7) equal to 5.196152423 and -5.196152423.

Subproblem 1

d + -7 = 5.196152423 Simplifying d + -7 = 5.196152423 Reorder the terms: -7 + d = 5.196152423 Solving -7 + d = 5.196152423 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + d = 5.196152423 + 7 Combine like terms: -7 + 7 = 0 0 + d = 5.196152423 + 7 d = 5.196152423 + 7 Combine like terms: 5.196152423 + 7 = 12.196152423 d = 12.196152423 Simplifying d = 12.196152423

Subproblem 2

d + -7 = -5.196152423 Simplifying d + -7 = -5.196152423 Reorder the terms: -7 + d = -5.196152423 Solving -7 + d = -5.196152423 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + d = -5.196152423 + 7 Combine like terms: -7 + 7 = 0 0 + d = -5.196152423 + 7 d = -5.196152423 + 7 Combine like terms: -5.196152423 + 7 = 1.803847577 d = 1.803847577 Simplifying d = 1.803847577

Solution

The solution to the problem is based on the solutions from the subproblems. d = {12.196152423, 1.803847577}

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