5x^2-11x+3-6x-13x^2=

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Solution for 5x^2-11x+3-6x-13x^2= equation:


Simplifying
5x2 + -11x + 3 + -6x + -13x2 = 0

Reorder the terms:
3 + -11x + -6x + 5x2 + -13x2 = 0

Combine like terms: -11x + -6x = -17x
3 + -17x + 5x2 + -13x2 = 0

Combine like terms: 5x2 + -13x2 = -8x2
3 + -17x + -8x2 = 0

Solving
3 + -17x + -8x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
-0.375 + 2.125x + x2 = 0

Move the constant term to the right:

Add '0.375' to each side of the equation.
-0.375 + 2.125x + 0.375 + x2 = 0 + 0.375

Reorder the terms:
-0.375 + 0.375 + 2.125x + x2 = 0 + 0.375

Combine like terms: -0.375 + 0.375 = 0.000
0.000 + 2.125x + x2 = 0 + 0.375
2.125x + x2 = 0 + 0.375

Combine like terms: 0 + 0.375 = 0.375
2.125x + x2 = 0.375

The x term is 2.125x.  Take half its coefficient (1.0625).
Square it (1.12890625) and add it to both sides.

Add '1.12890625' to each side of the equation.
2.125x + 1.12890625 + x2 = 0.375 + 1.12890625

Reorder the terms:
1.12890625 + 2.125x + x2 = 0.375 + 1.12890625

Combine like terms: 0.375 + 1.12890625 = 1.50390625
1.12890625 + 2.125x + x2 = 1.50390625

Factor a perfect square on the left side:
(x + 1.0625)(x + 1.0625) = 1.50390625

Calculate the square root of the right side: 1.226338554

Break this problem into two subproblems by setting 
(x + 1.0625) equal to 1.226338554 and -1.226338554.

Subproblem 1

x + 1.0625 = 1.226338554 Simplifying x + 1.0625 = 1.226338554 Reorder the terms: 1.0625 + x = 1.226338554 Solving 1.0625 + x = 1.226338554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.0625' to each side of the equation. 1.0625 + -1.0625 + x = 1.226338554 + -1.0625 Combine like terms: 1.0625 + -1.0625 = 0.0000 0.0000 + x = 1.226338554 + -1.0625 x = 1.226338554 + -1.0625 Combine like terms: 1.226338554 + -1.0625 = 0.163838554 x = 0.163838554 Simplifying x = 0.163838554

Subproblem 2

x + 1.0625 = -1.226338554 Simplifying x + 1.0625 = -1.226338554 Reorder the terms: 1.0625 + x = -1.226338554 Solving 1.0625 + x = -1.226338554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.0625' to each side of the equation. 1.0625 + -1.0625 + x = -1.226338554 + -1.0625 Combine like terms: 1.0625 + -1.0625 = 0.0000 0.0000 + x = -1.226338554 + -1.0625 x = -1.226338554 + -1.0625 Combine like terms: -1.226338554 + -1.0625 = -2.288838554 x = -2.288838554 Simplifying x = -2.288838554

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.163838554, -2.288838554}

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