1=-10x^2+13x+3

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Solution for 1=-10x^2+13x+3 equation:


Simplifying
1 = -10x2 + 13x + 3

Reorder the terms:
1 = 3 + 13x + -10x2

Solving
1 = 3 + 13x + -10x2

Solving for variable 'x'.

Combine like terms: 1 + -3 = -2
-2 + -13x + 10x2 = 3 + 13x + -10x2 + -3 + -13x + 10x2

Reorder the terms:
-2 + -13x + 10x2 = 3 + -3 + 13x + -13x + -10x2 + 10x2

Combine like terms: 3 + -3 = 0
-2 + -13x + 10x2 = 0 + 13x + -13x + -10x2 + 10x2
-2 + -13x + 10x2 = 13x + -13x + -10x2 + 10x2

Combine like terms: 13x + -13x = 0
-2 + -13x + 10x2 = 0 + -10x2 + 10x2
-2 + -13x + 10x2 = -10x2 + 10x2

Combine like terms: -10x2 + 10x2 = 0
-2 + -13x + 10x2 = 0

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

Divide each side by '10'.
-0.2 + -1.3x + x2 = 0

Move the constant term to the right:

Add '0.2' to each side of the equation.
-0.2 + -1.3x + 0.2 + x2 = 0 + 0.2

Reorder the terms:
-0.2 + 0.2 + -1.3x + x2 = 0 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + -1.3x + x2 = 0 + 0.2
-1.3x + x2 = 0 + 0.2

Combine like terms: 0 + 0.2 = 0.2
-1.3x + x2 = 0.2

The x term is -1.3x.  Take half its coefficient (-0.65).
Square it (0.4225) and add it to both sides.

Add '0.4225' to each side of the equation.
-1.3x + 0.4225 + x2 = 0.2 + 0.4225

Reorder the terms:
0.4225 + -1.3x + x2 = 0.2 + 0.4225

Combine like terms: 0.2 + 0.4225 = 0.6225
0.4225 + -1.3x + x2 = 0.6225

Factor a perfect square on the left side:
(x + -0.65)(x + -0.65) = 0.6225

Calculate the square root of the right side: 0.788986692

Break this problem into two subproblems by setting 
(x + -0.65) equal to 0.788986692 and -0.788986692.

Subproblem 1

x + -0.65 = 0.788986692 Simplifying x + -0.65 = 0.788986692 Reorder the terms: -0.65 + x = 0.788986692 Solving -0.65 + x = 0.788986692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.65' to each side of the equation. -0.65 + 0.65 + x = 0.788986692 + 0.65 Combine like terms: -0.65 + 0.65 = 0.00 0.00 + x = 0.788986692 + 0.65 x = 0.788986692 + 0.65 Combine like terms: 0.788986692 + 0.65 = 1.438986692 x = 1.438986692 Simplifying x = 1.438986692

Subproblem 2

x + -0.65 = -0.788986692 Simplifying x + -0.65 = -0.788986692 Reorder the terms: -0.65 + x = -0.788986692 Solving -0.65 + x = -0.788986692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.65' to each side of the equation. -0.65 + 0.65 + x = -0.788986692 + 0.65 Combine like terms: -0.65 + 0.65 = 0.00 0.00 + x = -0.788986692 + 0.65 x = -0.788986692 + 0.65 Combine like terms: -0.788986692 + 0.65 = -0.138986692 x = -0.138986692 Simplifying x = -0.138986692

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.438986692, -0.138986692}

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