2c^2-7c-200=

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Solution for 2c^2-7c-200= equation:


Simplifying
2c2 + -7c + -200 = 0

Reorder the terms:
-200 + -7c + 2c2 = 0

Solving
-200 + -7c + 2c2 = 0

Solving for variable 'c'.

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

Divide each side by '2'.
-100 + -3.5c + c2 = 0

Move the constant term to the right:

Add '100' to each side of the equation.
-100 + -3.5c + 100 + c2 = 0 + 100

Reorder the terms:
-100 + 100 + -3.5c + c2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + -3.5c + c2 = 0 + 100
-3.5c + c2 = 0 + 100

Combine like terms: 0 + 100 = 100
-3.5c + c2 = 100

The c term is -3.5c.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5c + 3.0625 + c2 = 100 + 3.0625

Reorder the terms:
3.0625 + -3.5c + c2 = 100 + 3.0625

Combine like terms: 100 + 3.0625 = 103.0625
3.0625 + -3.5c + c2 = 103.0625

Factor a perfect square on the left side:
(c + -1.75)(c + -1.75) = 103.0625

Calculate the square root of the right side: 10.151970252

Break this problem into two subproblems by setting 
(c + -1.75) equal to 10.151970252 and -10.151970252.

Subproblem 1

c + -1.75 = 10.151970252 Simplifying c + -1.75 = 10.151970252 Reorder the terms: -1.75 + c = 10.151970252 Solving -1.75 + c = 10.151970252 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + c = 10.151970252 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + c = 10.151970252 + 1.75 c = 10.151970252 + 1.75 Combine like terms: 10.151970252 + 1.75 = 11.901970252 c = 11.901970252 Simplifying c = 11.901970252

Subproblem 2

c + -1.75 = -10.151970252 Simplifying c + -1.75 = -10.151970252 Reorder the terms: -1.75 + c = -10.151970252 Solving -1.75 + c = -10.151970252 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + c = -10.151970252 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + c = -10.151970252 + 1.75 c = -10.151970252 + 1.75 Combine like terms: -10.151970252 + 1.75 = -8.401970252 c = -8.401970252 Simplifying c = -8.401970252

Solution

The solution to the problem is based on the solutions from the subproblems. c = {11.901970252, -8.401970252}

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