-x^2+14x+49=16

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Solution for -x^2+14x+49=16 equation:


Simplifying
-1x2 + 14x + 49 = 16

Reorder the terms:
49 + 14x + -1x2 = 16

Solving
49 + 14x + -1x2 = 16

Solving for variable 'x'.

Reorder the terms:
49 + -16 + 14x + -1x2 = 16 + -16

Combine like terms: 49 + -16 = 33
33 + 14x + -1x2 = 16 + -16

Combine like terms: 16 + -16 = 0
33 + 14x + -1x2 = 0

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

Divide each side by '-1'.
-33 + -14x + x2 = 0

Move the constant term to the right:

Add '33' to each side of the equation.
-33 + -14x + 33 + x2 = 0 + 33

Reorder the terms:
-33 + 33 + -14x + x2 = 0 + 33

Combine like terms: -33 + 33 = 0
0 + -14x + x2 = 0 + 33
-14x + x2 = 0 + 33

Combine like terms: 0 + 33 = 33
-14x + x2 = 33

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 = 33 + 49

Reorder the terms:
49 + -14x + x2 = 33 + 49

Combine like terms: 33 + 49 = 82
49 + -14x + x2 = 82

Factor a perfect square on the left side:
(x + -7)(x + -7) = 82

Calculate the square root of the right side: 9.055385138

Break this problem into two subproblems by setting 
(x + -7) equal to 9.055385138 and -9.055385138.

Subproblem 1

x + -7 = 9.055385138 Simplifying x + -7 = 9.055385138 Reorder the terms: -7 + x = 9.055385138 Solving -7 + x = 9.055385138 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 = 9.055385138 + 7 Combine like terms: -7 + 7 = 0 0 + x = 9.055385138 + 7 x = 9.055385138 + 7 Combine like terms: 9.055385138 + 7 = 16.055385138 x = 16.055385138 Simplifying x = 16.055385138

Subproblem 2

x + -7 = -9.055385138 Simplifying x + -7 = -9.055385138 Reorder the terms: -7 + x = -9.055385138 Solving -7 + x = -9.055385138 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 = -9.055385138 + 7 Combine like terms: -7 + 7 = 0 0 + x = -9.055385138 + 7 x = -9.055385138 + 7 Combine like terms: -9.055385138 + 7 = -2.055385138 x = -2.055385138 Simplifying x = -2.055385138

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.055385138, -2.055385138}

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