x=49x^2-16

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


Simplifying
x = 49x2 + -16

Reorder the terms:
x = -16 + 49x2

Solving
x = -16 + 49x2

Solving for variable 'x'.

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

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

Combine like terms: -16 + 16 = 0
16 + x + -49x2 = 0 + 49x2 + -49x2
16 + x + -49x2 = 49x2 + -49x2

Combine like terms: 49x2 + -49x2 = 0
16 + x + -49x2 = 0

Begin completing the square.  Divide all terms by
-49 the coefficient of the squared term: 

Divide each side by '-49'.
-0.3265306122 + -0.02040816327x + x2 = 0

Move the constant term to the right:

Add '0.3265306122' to each side of the equation.
-0.3265306122 + -0.02040816327x + 0.3265306122 + x2 = 0 + 0.3265306122

Reorder the terms:
-0.3265306122 + 0.3265306122 + -0.02040816327x + x2 = 0 + 0.3265306122

Combine like terms: -0.3265306122 + 0.3265306122 = 0.0000000000
0.0000000000 + -0.02040816327x + x2 = 0 + 0.3265306122
-0.02040816327x + x2 = 0 + 0.3265306122

Combine like terms: 0 + 0.3265306122 = 0.3265306122
-0.02040816327x + x2 = 0.3265306122

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.02040816327x + 0.25 + x2 = 0.3265306122 + 0.25

Reorder the terms:
0.25 + -0.02040816327x + x2 = 0.3265306122 + 0.25

Combine like terms: 0.3265306122 + 0.25 = 0.5765306122
0.25 + -0.02040816327x + x2 = 0.5765306122

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.5765306122

Calculate the square root of the right side: 0.759296129

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.759296129 and -0.759296129.

Subproblem 1

x + 0.5 = 0.759296129 Simplifying x + 0.5 = 0.759296129 Reorder the terms: 0.5 + x = 0.759296129 Solving 0.5 + x = 0.759296129 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.759296129 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.759296129 + -0.5 x = 0.759296129 + -0.5 Combine like terms: 0.759296129 + -0.5 = 0.259296129 x = 0.259296129 Simplifying x = 0.259296129

Subproblem 2

x + 0.5 = -0.759296129 Simplifying x + 0.5 = -0.759296129 Reorder the terms: 0.5 + x = -0.759296129 Solving 0.5 + x = -0.759296129 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.759296129 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.759296129 + -0.5 x = -0.759296129 + -0.5 Combine like terms: -0.759296129 + -0.5 = -1.259296129 x = -1.259296129 Simplifying x = -1.259296129

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.259296129, -1.259296129}

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