0.485x^2-1.694x+0.315=98

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Solution for 0.485x^2-1.694x+0.315=98 equation:


Simplifying
0.485x2 + -1.694x + 0.315 = 98

Reorder the terms:
0.315 + -1.694x + 0.485x2 = 98

Solving
0.315 + -1.694x + 0.485x2 = 98

Solving for variable 'x'.

Reorder the terms:
0.315 + -98 + -1.694x + 0.485x2 = 98 + -98

Combine like terms: 0.315 + -98 = -97.685
-97.685 + -1.694x + 0.485x2 = 98 + -98

Combine like terms: 98 + -98 = 0
-97.685 + -1.694x + 0.485x2 = 0

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

Divide each side by '0.485'.
-201.4123711 + -3.492783505x + x2 = 0

Move the constant term to the right:

Add '201.4123711' to each side of the equation.
-201.4123711 + -3.492783505x + 201.4123711 + x2 = 0 + 201.4123711

Reorder the terms:
-201.4123711 + 201.4123711 + -3.492783505x + x2 = 0 + 201.4123711

Combine like terms: -201.4123711 + 201.4123711 = 0.0000000
0.0000000 + -3.492783505x + x2 = 0 + 201.4123711
-3.492783505x + x2 = 0 + 201.4123711

Combine like terms: 0 + 201.4123711 = 201.4123711
-3.492783505x + x2 = 201.4123711

The x term is -3.492783505x.  Take half its coefficient (-1.746391753).
Square it (3.049884155) and add it to both sides.

Add '3.049884155' to each side of the equation.
-3.492783505x + 3.049884155 + x2 = 201.4123711 + 3.049884155

Reorder the terms:
3.049884155 + -3.492783505x + x2 = 201.4123711 + 3.049884155

Combine like terms: 201.4123711 + 3.049884155 = 204.462255255
3.049884155 + -3.492783505x + x2 = 204.462255255

Factor a perfect square on the left side:
(x + -1.746391753)(x + -1.746391753) = 204.462255255

Calculate the square root of the right side: 14.299029871

Break this problem into two subproblems by setting 
(x + -1.746391753) equal to 14.299029871 and -14.299029871.

Subproblem 1

x + -1.746391753 = 14.299029871 Simplifying x + -1.746391753 = 14.299029871 Reorder the terms: -1.746391753 + x = 14.299029871 Solving -1.746391753 + x = 14.299029871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.746391753' to each side of the equation. -1.746391753 + 1.746391753 + x = 14.299029871 + 1.746391753 Combine like terms: -1.746391753 + 1.746391753 = 0.000000000 0.000000000 + x = 14.299029871 + 1.746391753 x = 14.299029871 + 1.746391753 Combine like terms: 14.299029871 + 1.746391753 = 16.045421624 x = 16.045421624 Simplifying x = 16.045421624

Subproblem 2

x + -1.746391753 = -14.299029871 Simplifying x + -1.746391753 = -14.299029871 Reorder the terms: -1.746391753 + x = -14.299029871 Solving -1.746391753 + x = -14.299029871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.746391753' to each side of the equation. -1.746391753 + 1.746391753 + x = -14.299029871 + 1.746391753 Combine like terms: -1.746391753 + 1.746391753 = 0.000000000 0.000000000 + x = -14.299029871 + 1.746391753 x = -14.299029871 + 1.746391753 Combine like terms: -14.299029871 + 1.746391753 = -12.552638118 x = -12.552638118 Simplifying x = -12.552638118

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.045421624, -12.552638118}

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