-x^2+14x=43

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Solution for -x^2+14x=43 equation:


Simplifying
-1x2 + 14x = 43

Reorder the terms:
14x + -1x2 = 43

Solving
14x + -1x2 = 43

Solving for variable 'x'.

Reorder the terms:
-43 + 14x + -1x2 = 43 + -43

Combine like terms: 43 + -43 = 0
-43 + 14x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
43 + -14x + x2 = 0

Move the constant term to the right:

Add '-43' to each side of the equation.
43 + -14x + -43 + x2 = 0 + -43

Reorder the terms:
43 + -43 + -14x + x2 = 0 + -43

Combine like terms: 43 + -43 = 0
0 + -14x + x2 = 0 + -43
-14x + x2 = 0 + -43

Combine like terms: 0 + -43 = -43
-14x + x2 = -43

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = -43 + 49

Reorder the terms:
49 + -14x + x2 = -43 + 49

Combine like terms: -43 + 49 = 6
49 + -14x + x2 = 6

Factor a perfect square on the left side:
(x + -7)(x + -7) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(x + -7) equal to 2.449489743 and -2.449489743.

Subproblem 1

x + -7 = 2.449489743 Simplifying x + -7 = 2.449489743 Reorder the terms: -7 + x = 2.449489743 Solving -7 + x = 2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 2.449489743 + 7 Combine like terms: -7 + 7 = 0 0 + x = 2.449489743 + 7 x = 2.449489743 + 7 Combine like terms: 2.449489743 + 7 = 9.449489743 x = 9.449489743 Simplifying x = 9.449489743

Subproblem 2

x + -7 = -2.449489743 Simplifying x + -7 = -2.449489743 Reorder the terms: -7 + x = -2.449489743 Solving -7 + x = -2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -2.449489743 + 7 Combine like terms: -7 + 7 = 0 0 + x = -2.449489743 + 7 x = -2.449489743 + 7 Combine like terms: -2.449489743 + 7 = 4.550510257 x = 4.550510257 Simplifying x = 4.550510257

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.449489743, 4.550510257}

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