5x+16-4x^2+6x-5=

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Solution for 5x+16-4x^2+6x-5= equation:


Simplifying
5x + 16 + -4x2 + 6x + -5 = 0

Reorder the terms:
16 + -5 + 5x + 6x + -4x2 = 0

Combine like terms: 16 + -5 = 11
11 + 5x + 6x + -4x2 = 0

Combine like terms: 5x + 6x = 11x
11 + 11x + -4x2 = 0

Solving
11 + 11x + -4x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-2.75 + -2.75x + x2 = 0

Move the constant term to the right:

Add '2.75' to each side of the equation.
-2.75 + -2.75x + 2.75 + x2 = 0 + 2.75

Reorder the terms:
-2.75 + 2.75 + -2.75x + x2 = 0 + 2.75

Combine like terms: -2.75 + 2.75 = 0.00
0.00 + -2.75x + x2 = 0 + 2.75
-2.75x + x2 = 0 + 2.75

Combine like terms: 0 + 2.75 = 2.75
-2.75x + x2 = 2.75

The x term is -2.75x.  Take half its coefficient (-1.375).
Square it (1.890625) and add it to both sides.

Add '1.890625' to each side of the equation.
-2.75x + 1.890625 + x2 = 2.75 + 1.890625

Reorder the terms:
1.890625 + -2.75x + x2 = 2.75 + 1.890625

Combine like terms: 2.75 + 1.890625 = 4.640625
1.890625 + -2.75x + x2 = 4.640625

Factor a perfect square on the left side:
(x + -1.375)(x + -1.375) = 4.640625

Calculate the square root of the right side: 2.154210992

Break this problem into two subproblems by setting 
(x + -1.375) equal to 2.154210992 and -2.154210992.

Subproblem 1

x + -1.375 = 2.154210992 Simplifying x + -1.375 = 2.154210992 Reorder the terms: -1.375 + x = 2.154210992 Solving -1.375 + x = 2.154210992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = 2.154210992 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = 2.154210992 + 1.375 x = 2.154210992 + 1.375 Combine like terms: 2.154210992 + 1.375 = 3.529210992 x = 3.529210992 Simplifying x = 3.529210992

Subproblem 2

x + -1.375 = -2.154210992 Simplifying x + -1.375 = -2.154210992 Reorder the terms: -1.375 + x = -2.154210992 Solving -1.375 + x = -2.154210992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = -2.154210992 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = -2.154210992 + 1.375 x = -2.154210992 + 1.375 Combine like terms: -2.154210992 + 1.375 = -0.779210992 x = -0.779210992 Simplifying x = -0.779210992

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.529210992, -0.779210992}

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