(3c^2+4c-5)-(2c^2-8c+11)=

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Solution for (3c^2+4c-5)-(2c^2-8c+11)= equation:


Simplifying
(3c2 + 4c + -5) + -1(2c2 + -8c + 11) = 0

Reorder the terms:
(-5 + 4c + 3c2) + -1(2c2 + -8c + 11) = 0

Remove parenthesis around (-5 + 4c + 3c2)
-5 + 4c + 3c2 + -1(2c2 + -8c + 11) = 0

Reorder the terms:
-5 + 4c + 3c2 + -1(11 + -8c + 2c2) = 0
-5 + 4c + 3c2 + (11 * -1 + -8c * -1 + 2c2 * -1) = 0
-5 + 4c + 3c2 + (-11 + 8c + -2c2) = 0

Reorder the terms:
-5 + -11 + 4c + 8c + 3c2 + -2c2 = 0

Combine like terms: -5 + -11 = -16
-16 + 4c + 8c + 3c2 + -2c2 = 0

Combine like terms: 4c + 8c = 12c
-16 + 12c + 3c2 + -2c2 = 0

Combine like terms: 3c2 + -2c2 = 1c2
-16 + 12c + 1c2 = 0

Solving
-16 + 12c + 1c2 = 0

Solving for variable 'c'.

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + 12c + 16 + c2 = 0 + 16

Reorder the terms:
-16 + 16 + 12c + c2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 12c + c2 = 0 + 16
12c + c2 = 0 + 16

Combine like terms: 0 + 16 = 16
12c + c2 = 16

The c term is 12c.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12c + 36 + c2 = 16 + 36

Reorder the terms:
36 + 12c + c2 = 16 + 36

Combine like terms: 16 + 36 = 52
36 + 12c + c2 = 52

Factor a perfect square on the left side:
(c + 6)(c + 6) = 52

Calculate the square root of the right side: 7.211102551

Break this problem into two subproblems by setting 
(c + 6) equal to 7.211102551 and -7.211102551.

Subproblem 1

c + 6 = 7.211102551 Simplifying c + 6 = 7.211102551 Reorder the terms: 6 + c = 7.211102551 Solving 6 + c = 7.211102551 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + c = 7.211102551 + -6 Combine like terms: 6 + -6 = 0 0 + c = 7.211102551 + -6 c = 7.211102551 + -6 Combine like terms: 7.211102551 + -6 = 1.211102551 c = 1.211102551 Simplifying c = 1.211102551

Subproblem 2

c + 6 = -7.211102551 Simplifying c + 6 = -7.211102551 Reorder the terms: 6 + c = -7.211102551 Solving 6 + c = -7.211102551 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + c = -7.211102551 + -6 Combine like terms: 6 + -6 = 0 0 + c = -7.211102551 + -6 c = -7.211102551 + -6 Combine like terms: -7.211102551 + -6 = -13.211102551 c = -13.211102551 Simplifying c = -13.211102551

Solution

The solution to the problem is based on the solutions from the subproblems. c = {1.211102551, -13.211102551}

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