43x-15x^2-11=

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Solution for 43x-15x^2-11= equation:


Simplifying
43x + -15x2 + -11 = 0

Reorder the terms:
-11 + 43x + -15x2 = 0

Solving
-11 + 43x + -15x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-15 the coefficient of the squared term: 

Divide each side by '-15'.
0.7333333333 + -2.866666667x + x2 = 0

Move the constant term to the right:

Add '-0.7333333333' to each side of the equation.
0.7333333333 + -2.866666667x + -0.7333333333 + x2 = 0 + -0.7333333333

Reorder the terms:
0.7333333333 + -0.7333333333 + -2.866666667x + x2 = 0 + -0.7333333333

Combine like terms: 0.7333333333 + -0.7333333333 = 0.0000000000
0.0000000000 + -2.866666667x + x2 = 0 + -0.7333333333
-2.866666667x + x2 = 0 + -0.7333333333

Combine like terms: 0 + -0.7333333333 = -0.7333333333
-2.866666667x + x2 = -0.7333333333

The x term is -2.866666667x.  Take half its coefficient (-1.433333334).
Square it (2.054444446) and add it to both sides.

Add '2.054444446' to each side of the equation.
-2.866666667x + 2.054444446 + x2 = -0.7333333333 + 2.054444446

Reorder the terms:
2.054444446 + -2.866666667x + x2 = -0.7333333333 + 2.054444446

Combine like terms: -0.7333333333 + 2.054444446 = 1.3211111127
2.054444446 + -2.866666667x + x2 = 1.3211111127

Factor a perfect square on the left side:
(x + -1.433333334)(x + -1.433333334) = 1.3211111127

Calculate the square root of the right side: 1.149395977

Break this problem into two subproblems by setting 
(x + -1.433333334) equal to 1.149395977 and -1.149395977.

Subproblem 1

x + -1.433333334 = 1.149395977 Simplifying x + -1.433333334 = 1.149395977 Reorder the terms: -1.433333334 + x = 1.149395977 Solving -1.433333334 + x = 1.149395977 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.433333334' to each side of the equation. -1.433333334 + 1.433333334 + x = 1.149395977 + 1.433333334 Combine like terms: -1.433333334 + 1.433333334 = 0.000000000 0.000000000 + x = 1.149395977 + 1.433333334 x = 1.149395977 + 1.433333334 Combine like terms: 1.149395977 + 1.433333334 = 2.582729311 x = 2.582729311 Simplifying x = 2.582729311

Subproblem 2

x + -1.433333334 = -1.149395977 Simplifying x + -1.433333334 = -1.149395977 Reorder the terms: -1.433333334 + x = -1.149395977 Solving -1.433333334 + x = -1.149395977 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.433333334' to each side of the equation. -1.433333334 + 1.433333334 + x = -1.149395977 + 1.433333334 Combine like terms: -1.433333334 + 1.433333334 = 0.000000000 0.000000000 + x = -1.149395977 + 1.433333334 x = -1.149395977 + 1.433333334 Combine like terms: -1.149395977 + 1.433333334 = 0.283937357 x = 0.283937357 Simplifying x = 0.283937357

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.582729311, 0.283937357}

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