10x^2-43x-19=

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Solution for 10x^2-43x-19= equation:


Simplifying
10x2 + -43x + -19 = 0

Reorder the terms:
-19 + -43x + 10x2 = 0

Solving
-19 + -43x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-1.9 + -4.3x + x2 = 0

Move the constant term to the right:

Add '1.9' to each side of the equation.
-1.9 + -4.3x + 1.9 + x2 = 0 + 1.9

Reorder the terms:
-1.9 + 1.9 + -4.3x + x2 = 0 + 1.9

Combine like terms: -1.9 + 1.9 = 0.0
0.0 + -4.3x + x2 = 0 + 1.9
-4.3x + x2 = 0 + 1.9

Combine like terms: 0 + 1.9 = 1.9
-4.3x + x2 = 1.9

The x term is -4.3x.  Take half its coefficient (-2.15).
Square it (4.6225) and add it to both sides.

Add '4.6225' to each side of the equation.
-4.3x + 4.6225 + x2 = 1.9 + 4.6225

Reorder the terms:
4.6225 + -4.3x + x2 = 1.9 + 4.6225

Combine like terms: 1.9 + 4.6225 = 6.5225
4.6225 + -4.3x + x2 = 6.5225

Factor a perfect square on the left side:
(x + -2.15)(x + -2.15) = 6.5225

Calculate the square root of the right side: 2.553918558

Break this problem into two subproblems by setting 
(x + -2.15) equal to 2.553918558 and -2.553918558.

Subproblem 1

x + -2.15 = 2.553918558 Simplifying x + -2.15 = 2.553918558 Reorder the terms: -2.15 + x = 2.553918558 Solving -2.15 + x = 2.553918558 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.15' to each side of the equation. -2.15 + 2.15 + x = 2.553918558 + 2.15 Combine like terms: -2.15 + 2.15 = 0.00 0.00 + x = 2.553918558 + 2.15 x = 2.553918558 + 2.15 Combine like terms: 2.553918558 + 2.15 = 4.703918558 x = 4.703918558 Simplifying x = 4.703918558

Subproblem 2

x + -2.15 = -2.553918558 Simplifying x + -2.15 = -2.553918558 Reorder the terms: -2.15 + x = -2.553918558 Solving -2.15 + x = -2.553918558 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.15' to each side of the equation. -2.15 + 2.15 + x = -2.553918558 + 2.15 Combine like terms: -2.15 + 2.15 = 0.00 0.00 + x = -2.553918558 + 2.15 x = -2.553918558 + 2.15 Combine like terms: -2.553918558 + 2.15 = -0.403918558 x = -0.403918558 Simplifying x = -0.403918558

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.703918558, -0.403918558}

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