43x-7x^2=766x-23

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Solution for 43x-7x^2=766x-23 equation:


Simplifying
43x + -7x2 = 766x + -23

Reorder the terms:
43x + -7x2 = -23 + 766x

Solving
43x + -7x2 = -23 + 766x

Solving for variable 'x'.

Reorder the terms:
23 + 43x + -766x + -7x2 = -23 + 766x + 23 + -766x

Combine like terms: 43x + -766x = -723x
23 + -723x + -7x2 = -23 + 766x + 23 + -766x

Reorder the terms:
23 + -723x + -7x2 = -23 + 23 + 766x + -766x

Combine like terms: -23 + 23 = 0
23 + -723x + -7x2 = 0 + 766x + -766x
23 + -723x + -7x2 = 766x + -766x

Combine like terms: 766x + -766x = 0
23 + -723x + -7x2 = 0

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
-3.285714286 + 103.2857143x + x2 = 0

Move the constant term to the right:

Add '3.285714286' to each side of the equation.
-3.285714286 + 103.2857143x + 3.285714286 + x2 = 0 + 3.285714286

Reorder the terms:
-3.285714286 + 3.285714286 + 103.2857143x + x2 = 0 + 3.285714286

Combine like terms: -3.285714286 + 3.285714286 = 0.000000000
0.000000000 + 103.2857143x + x2 = 0 + 3.285714286
103.2857143x + x2 = 0 + 3.285714286

Combine like terms: 0 + 3.285714286 = 3.285714286
103.2857143x + x2 = 3.285714286

The x term is 103.2857143x.  Take half its coefficient (51.64285715).
Square it (2666.984695) and add it to both sides.

Add '2666.984695' to each side of the equation.
103.2857143x + 2666.984695 + x2 = 3.285714286 + 2666.984695

Reorder the terms:
2666.984695 + 103.2857143x + x2 = 3.285714286 + 2666.984695

Combine like terms: 3.285714286 + 2666.984695 = 2670.270409286
2666.984695 + 103.2857143x + x2 = 2670.270409286

Factor a perfect square on the left side:
(x + 51.64285715)(x + 51.64285715) = 2670.270409286

Calculate the square root of the right side: 51.674659257

Break this problem into two subproblems by setting 
(x + 51.64285715) equal to 51.674659257 and -51.674659257.

Subproblem 1

x + 51.64285715 = 51.674659257 Simplifying x + 51.64285715 = 51.674659257 Reorder the terms: 51.64285715 + x = 51.674659257 Solving 51.64285715 + x = 51.674659257 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-51.64285715' to each side of the equation. 51.64285715 + -51.64285715 + x = 51.674659257 + -51.64285715 Combine like terms: 51.64285715 + -51.64285715 = 0.00000000 0.00000000 + x = 51.674659257 + -51.64285715 x = 51.674659257 + -51.64285715 Combine like terms: 51.674659257 + -51.64285715 = 0.031802107 x = 0.031802107 Simplifying x = 0.031802107

Subproblem 2

x + 51.64285715 = -51.674659257 Simplifying x + 51.64285715 = -51.674659257 Reorder the terms: 51.64285715 + x = -51.674659257 Solving 51.64285715 + x = -51.674659257 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-51.64285715' to each side of the equation. 51.64285715 + -51.64285715 + x = -51.674659257 + -51.64285715 Combine like terms: 51.64285715 + -51.64285715 = 0.00000000 0.00000000 + x = -51.674659257 + -51.64285715 x = -51.674659257 + -51.64285715 Combine like terms: -51.674659257 + -51.64285715 = -103.317516407 x = -103.317516407 Simplifying x = -103.317516407

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.031802107, -103.317516407}

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