-0.08769x^2+1.7269x+2=0

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Solution for -0.08769x^2+1.7269x+2=0 equation:


Simplifying
-0.08769x2 + 1.7269x + 2 = 0

Reorder the terms:
2 + 1.7269x + -0.08769x2 = 0

Solving
2 + 1.7269x + -0.08769x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.08769 the coefficient of the squared term: 

Divide each side by '-0.08769'.
-22.80761774 + -19.69323754x + x2 = 0

Move the constant term to the right:

Add '22.80761774' to each side of the equation.
-22.80761774 + -19.69323754x + 22.80761774 + x2 = 0 + 22.80761774

Reorder the terms:
-22.80761774 + 22.80761774 + -19.69323754x + x2 = 0 + 22.80761774

Combine like terms: -22.80761774 + 22.80761774 = 0.00000000
0.00000000 + -19.69323754x + x2 = 0 + 22.80761774
-19.69323754x + x2 = 0 + 22.80761774

Combine like terms: 0 + 22.80761774 = 22.80761774
-19.69323754x + x2 = 22.80761774

The x term is -19.69323754x.  Take half its coefficient (-9.84661877).
Square it (96.95590120) and add it to both sides.

Add '96.95590120' to each side of the equation.
-19.69323754x + 96.95590120 + x2 = 22.80761774 + 96.95590120

Reorder the terms:
96.95590120 + -19.69323754x + x2 = 22.80761774 + 96.95590120

Combine like terms: 22.80761774 + 96.95590120 = 119.76351894
96.95590120 + -19.69323754x + x2 = 119.76351894

Factor a perfect square on the left side:
(x + -9.84661877)(x + -9.84661877) = 119.76351894

Calculate the square root of the right side: 10.943651993

Break this problem into two subproblems by setting 
(x + -9.84661877) equal to 10.943651993 and -10.943651993.

Subproblem 1

x + -9.84661877 = 10.943651993 Simplifying x + -9.84661877 = 10.943651993 Reorder the terms: -9.84661877 + x = 10.943651993 Solving -9.84661877 + x = 10.943651993 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.84661877' to each side of the equation. -9.84661877 + 9.84661877 + x = 10.943651993 + 9.84661877 Combine like terms: -9.84661877 + 9.84661877 = 0.00000000 0.00000000 + x = 10.943651993 + 9.84661877 x = 10.943651993 + 9.84661877 Combine like terms: 10.943651993 + 9.84661877 = 20.790270763 x = 20.790270763 Simplifying x = 20.790270763

Subproblem 2

x + -9.84661877 = -10.943651993 Simplifying x + -9.84661877 = -10.943651993 Reorder the terms: -9.84661877 + x = -10.943651993 Solving -9.84661877 + x = -10.943651993 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.84661877' to each side of the equation. -9.84661877 + 9.84661877 + x = -10.943651993 + 9.84661877 Combine like terms: -9.84661877 + 9.84661877 = 0.00000000 0.00000000 + x = -10.943651993 + 9.84661877 x = -10.943651993 + 9.84661877 Combine like terms: -10.943651993 + 9.84661877 = -1.097033223 x = -1.097033223 Simplifying x = -1.097033223

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.790270763, -1.097033223}

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