0=-0.01d^2+1.06d-22

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Solution for 0=-0.01d^2+1.06d-22 equation:


Simplifying
0 = -0.01d2 + 1.06d + -22

Reorder the terms:
0 = -22 + 1.06d + -0.01d2

Solving
0 = -22 + 1.06d + -0.01d2

Solving for variable 'd'.

Combine like terms: 0 + 22 = 22
22 + -1.06d + 0.01d2 = -22 + 1.06d + -0.01d2 + 22 + -1.06d + 0.01d2

Reorder the terms:
22 + -1.06d + 0.01d2 = -22 + 22 + 1.06d + -1.06d + -0.01d2 + 0.01d2

Combine like terms: -22 + 22 = 0
22 + -1.06d + 0.01d2 = 0 + 1.06d + -1.06d + -0.01d2 + 0.01d2
22 + -1.06d + 0.01d2 = 1.06d + -1.06d + -0.01d2 + 0.01d2

Combine like terms: 1.06d + -1.06d = 0.00
22 + -1.06d + 0.01d2 = 0.00 + -0.01d2 + 0.01d2
22 + -1.06d + 0.01d2 = -0.01d2 + 0.01d2

Combine like terms: -0.01d2 + 0.01d2 = 0.00
22 + -1.06d + 0.01d2 = 0.00

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

Divide each side by '0.01'.
2200 + -106d + d2 = 0

Move the constant term to the right:

Add '-2200' to each side of the equation.
2200 + -106d + -2200 + d2 = 0 + -2200

Reorder the terms:
2200 + -2200 + -106d + d2 = 0 + -2200

Combine like terms: 2200 + -2200 = 0
0 + -106d + d2 = 0 + -2200
-106d + d2 = 0 + -2200

Combine like terms: 0 + -2200 = -2200
-106d + d2 = -2200

The d term is -106d.  Take half its coefficient (-53).
Square it (2809) and add it to both sides.

Add '2809' to each side of the equation.
-106d + 2809 + d2 = -2200 + 2809

Reorder the terms:
2809 + -106d + d2 = -2200 + 2809

Combine like terms: -2200 + 2809 = 609
2809 + -106d + d2 = 609

Factor a perfect square on the left side:
(d + -53)(d + -53) = 609

Calculate the square root of the right side: 24.677925359

Break this problem into two subproblems by setting 
(d + -53) equal to 24.677925359 and -24.677925359.

Subproblem 1

d + -53 = 24.677925359 Simplifying d + -53 = 24.677925359 Reorder the terms: -53 + d = 24.677925359 Solving -53 + d = 24.677925359 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '53' to each side of the equation. -53 + 53 + d = 24.677925359 + 53 Combine like terms: -53 + 53 = 0 0 + d = 24.677925359 + 53 d = 24.677925359 + 53 Combine like terms: 24.677925359 + 53 = 77.677925359 d = 77.677925359 Simplifying d = 77.677925359

Subproblem 2

d + -53 = -24.677925359 Simplifying d + -53 = -24.677925359 Reorder the terms: -53 + d = -24.677925359 Solving -53 + d = -24.677925359 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '53' to each side of the equation. -53 + 53 + d = -24.677925359 + 53 Combine like terms: -53 + 53 = 0 0 + d = -24.677925359 + 53 d = -24.677925359 + 53 Combine like terms: -24.677925359 + 53 = 28.322074641 d = 28.322074641 Simplifying d = 28.322074641

Solution

The solution to the problem is based on the solutions from the subproblems. d = {77.677925359, 28.322074641}

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