7.61x^2-3.73x=7.83

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Solution for 7.61x^2-3.73x=7.83 equation:


Simplifying
7.61x2 + -3.73x = 7.83

Reorder the terms:
-3.73x + 7.61x2 = 7.83

Solving
-3.73x + 7.61x2 = 7.83

Solving for variable 'x'.

Reorder the terms:
-7.83 + -3.73x + 7.61x2 = 7.83 + -7.83

Combine like terms: 7.83 + -7.83 = 0.00
-7.83 + -3.73x + 7.61x2 = 0.00

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

Divide each side by '7.61'.
-1.02890933 + -0.4901445466x + x2 = 0

Move the constant term to the right:

Add '1.02890933' to each side of the equation.
-1.02890933 + -0.4901445466x + 1.02890933 + x2 = 0 + 1.02890933

Reorder the terms:
-1.02890933 + 1.02890933 + -0.4901445466x + x2 = 0 + 1.02890933

Combine like terms: -1.02890933 + 1.02890933 = 0.00000000
0.00000000 + -0.4901445466x + x2 = 0 + 1.02890933
-0.4901445466x + x2 = 0 + 1.02890933

Combine like terms: 0 + 1.02890933 = 1.02890933
-0.4901445466x + x2 = 1.02890933

The x term is -0.4901445466x.  Take half its coefficient (-0.2450722733).
Square it (0.06006041914) and add it to both sides.

Add '0.06006041914' to each side of the equation.
-0.4901445466x + 0.06006041914 + x2 = 1.02890933 + 0.06006041914

Reorder the terms:
0.06006041914 + -0.4901445466x + x2 = 1.02890933 + 0.06006041914

Combine like terms: 1.02890933 + 0.06006041914 = 1.08896974914
0.06006041914 + -0.4901445466x + x2 = 1.08896974914

Factor a perfect square on the left side:
(x + -0.2450722733)(x + -0.2450722733) = 1.08896974914

Calculate the square root of the right side: 1.043537134

Break this problem into two subproblems by setting 
(x + -0.2450722733) equal to 1.043537134 and -1.043537134.

Subproblem 1

x + -0.2450722733 = 1.043537134 Simplifying x + -0.2450722733 = 1.043537134 Reorder the terms: -0.2450722733 + x = 1.043537134 Solving -0.2450722733 + x = 1.043537134 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2450722733' to each side of the equation. -0.2450722733 + 0.2450722733 + x = 1.043537134 + 0.2450722733 Combine like terms: -0.2450722733 + 0.2450722733 = 0.0000000000 0.0000000000 + x = 1.043537134 + 0.2450722733 x = 1.043537134 + 0.2450722733 Combine like terms: 1.043537134 + 0.2450722733 = 1.2886094073 x = 1.2886094073 Simplifying x = 1.2886094073

Subproblem 2

x + -0.2450722733 = -1.043537134 Simplifying x + -0.2450722733 = -1.043537134 Reorder the terms: -0.2450722733 + x = -1.043537134 Solving -0.2450722733 + x = -1.043537134 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2450722733' to each side of the equation. -0.2450722733 + 0.2450722733 + x = -1.043537134 + 0.2450722733 Combine like terms: -0.2450722733 + 0.2450722733 = 0.0000000000 0.0000000000 + x = -1.043537134 + 0.2450722733 x = -1.043537134 + 0.2450722733 Combine like terms: -1.043537134 + 0.2450722733 = -0.7984648607 x = -0.7984648607 Simplifying x = -0.7984648607

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.2886094073, -0.7984648607}

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