-10x^2+2x-9x^2+5=

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Solution for -10x^2+2x-9x^2+5= equation:


Simplifying
-10x2 + 2x + -9x2 + 5 = 0

Reorder the terms:
5 + 2x + -10x2 + -9x2 = 0

Combine like terms: -10x2 + -9x2 = -19x2
5 + 2x + -19x2 = 0

Solving
5 + 2x + -19x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-19 the coefficient of the squared term: 

Divide each side by '-19'.
-0.2631578947 + -0.1052631579x + x2 = 0

Move the constant term to the right:

Add '0.2631578947' to each side of the equation.
-0.2631578947 + -0.1052631579x + 0.2631578947 + x2 = 0 + 0.2631578947

Reorder the terms:
-0.2631578947 + 0.2631578947 + -0.1052631579x + x2 = 0 + 0.2631578947

Combine like terms: -0.2631578947 + 0.2631578947 = 0.0000000000
0.0000000000 + -0.1052631579x + x2 = 0 + 0.2631578947
-0.1052631579x + x2 = 0 + 0.2631578947

Combine like terms: 0 + 0.2631578947 = 0.2631578947
-0.1052631579x + x2 = 0.2631578947

The x term is -0.1052631579x.  Take half its coefficient (-0.05263157895).
Square it (0.002770083103) and add it to both sides.

Add '0.002770083103' to each side of the equation.
-0.1052631579x + 0.002770083103 + x2 = 0.2631578947 + 0.002770083103

Reorder the terms:
0.002770083103 + -0.1052631579x + x2 = 0.2631578947 + 0.002770083103

Combine like terms: 0.2631578947 + 0.002770083103 = 0.265927977803
0.002770083103 + -0.1052631579x + x2 = 0.265927977803

Factor a perfect square on the left side:
(x + -0.05263157895)(x + -0.05263157895) = 0.265927977803

Calculate the square root of the right side: 0.515682051

Break this problem into two subproblems by setting 
(x + -0.05263157895) equal to 0.515682051 and -0.515682051.

Subproblem 1

x + -0.05263157895 = 0.515682051 Simplifying x + -0.05263157895 = 0.515682051 Reorder the terms: -0.05263157895 + x = 0.515682051 Solving -0.05263157895 + x = 0.515682051 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05263157895' to each side of the equation. -0.05263157895 + 0.05263157895 + x = 0.515682051 + 0.05263157895 Combine like terms: -0.05263157895 + 0.05263157895 = 0.00000000000 0.00000000000 + x = 0.515682051 + 0.05263157895 x = 0.515682051 + 0.05263157895 Combine like terms: 0.515682051 + 0.05263157895 = 0.56831362995 x = 0.56831362995 Simplifying x = 0.56831362995

Subproblem 2

x + -0.05263157895 = -0.515682051 Simplifying x + -0.05263157895 = -0.515682051 Reorder the terms: -0.05263157895 + x = -0.515682051 Solving -0.05263157895 + x = -0.515682051 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05263157895' to each side of the equation. -0.05263157895 + 0.05263157895 + x = -0.515682051 + 0.05263157895 Combine like terms: -0.05263157895 + 0.05263157895 = 0.00000000000 0.00000000000 + x = -0.515682051 + 0.05263157895 x = -0.515682051 + 0.05263157895 Combine like terms: -0.515682051 + 0.05263157895 = -0.46305047205 x = -0.46305047205 Simplifying x = -0.46305047205

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.56831362995, -0.46305047205}

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