3x+49=x^2-14x-49

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Solution for 3x+49=x^2-14x-49 equation:


Simplifying
3x + 49 = x2 + -14x + -49

Reorder the terms:
49 + 3x = x2 + -14x + -49

Reorder the terms:
49 + 3x = -49 + -14x + x2

Solving
49 + 3x = -49 + -14x + x2

Solving for variable 'x'.

Reorder the terms:
49 + 49 + 3x + 14x + -1x2 = -49 + -14x + x2 + 49 + 14x + -1x2

Combine like terms: 49 + 49 = 98
98 + 3x + 14x + -1x2 = -49 + -14x + x2 + 49 + 14x + -1x2

Combine like terms: 3x + 14x = 17x
98 + 17x + -1x2 = -49 + -14x + x2 + 49 + 14x + -1x2

Reorder the terms:
98 + 17x + -1x2 = -49 + 49 + -14x + 14x + x2 + -1x2

Combine like terms: -49 + 49 = 0
98 + 17x + -1x2 = 0 + -14x + 14x + x2 + -1x2
98 + 17x + -1x2 = -14x + 14x + x2 + -1x2

Combine like terms: -14x + 14x = 0
98 + 17x + -1x2 = 0 + x2 + -1x2
98 + 17x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
98 + 17x + -1x2 = 0

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

Divide each side by '-1'.
-98 + -17x + x2 = 0

Move the constant term to the right:

Add '98' to each side of the equation.
-98 + -17x + 98 + x2 = 0 + 98

Reorder the terms:
-98 + 98 + -17x + x2 = 0 + 98

Combine like terms: -98 + 98 = 0
0 + -17x + x2 = 0 + 98
-17x + x2 = 0 + 98

Combine like terms: 0 + 98 = 98
-17x + x2 = 98

The x term is -17x.  Take half its coefficient (-8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
-17x + 72.25 + x2 = 98 + 72.25

Reorder the terms:
72.25 + -17x + x2 = 98 + 72.25

Combine like terms: 98 + 72.25 = 170.25
72.25 + -17x + x2 = 170.25

Factor a perfect square on the left side:
(x + -8.5)(x + -8.5) = 170.25

Calculate the square root of the right side: 13.047988351

Break this problem into two subproblems by setting 
(x + -8.5) equal to 13.047988351 and -13.047988351.

Subproblem 1

x + -8.5 = 13.047988351 Simplifying x + -8.5 = 13.047988351 Reorder the terms: -8.5 + x = 13.047988351 Solving -8.5 + x = 13.047988351 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = 13.047988351 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = 13.047988351 + 8.5 x = 13.047988351 + 8.5 Combine like terms: 13.047988351 + 8.5 = 21.547988351 x = 21.547988351 Simplifying x = 21.547988351

Subproblem 2

x + -8.5 = -13.047988351 Simplifying x + -8.5 = -13.047988351 Reorder the terms: -8.5 + x = -13.047988351 Solving -8.5 + x = -13.047988351 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = -13.047988351 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = -13.047988351 + 8.5 x = -13.047988351 + 8.5 Combine like terms: -13.047988351 + 8.5 = -4.547988351 x = -4.547988351 Simplifying x = -4.547988351

Solution

The solution to the problem is based on the solutions from the subproblems. x = {21.547988351, -4.547988351}

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