49x^2=56x+16

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Solution for 49x^2=56x+16 equation:


Simplifying
49x2 = 56x + 16

Reorder the terms:
49x2 = 16 + 56x

Solving
49x2 = 16 + 56x

Solving for variable 'x'.

Reorder the terms:
-16 + -56x + 49x2 = 16 + 56x + -16 + -56x

Reorder the terms:
-16 + -56x + 49x2 = 16 + -16 + 56x + -56x

Combine like terms: 16 + -16 = 0
-16 + -56x + 49x2 = 0 + 56x + -56x
-16 + -56x + 49x2 = 56x + -56x

Combine like terms: 56x + -56x = 0
-16 + -56x + 49x2 = 0

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

Divide each side by '49'.
-0.3265306122 + -1.142857143x + x2 = 0

Move the constant term to the right:

Add '0.3265306122' to each side of the equation.
-0.3265306122 + -1.142857143x + 0.3265306122 + x2 = 0 + 0.3265306122

Reorder the terms:
-0.3265306122 + 0.3265306122 + -1.142857143x + x2 = 0 + 0.3265306122

Combine like terms: -0.3265306122 + 0.3265306122 = 0.0000000000
0.0000000000 + -1.142857143x + x2 = 0 + 0.3265306122
-1.142857143x + x2 = 0 + 0.3265306122

Combine like terms: 0 + 0.3265306122 = 0.3265306122
-1.142857143x + x2 = 0.3265306122

The x term is -1.142857143x.  Take half its coefficient (-0.5714285715).
Square it (0.3265306123) and add it to both sides.

Add '0.3265306123' to each side of the equation.
-1.142857143x + 0.3265306123 + x2 = 0.3265306122 + 0.3265306123

Reorder the terms:
0.3265306123 + -1.142857143x + x2 = 0.3265306122 + 0.3265306123

Combine like terms: 0.3265306122 + 0.3265306123 = 0.6530612245
0.3265306123 + -1.142857143x + x2 = 0.6530612245

Factor a perfect square on the left side:
(x + -0.5714285715)(x + -0.5714285715) = 0.6530612245

Calculate the square root of the right side: 0.808122036

Break this problem into two subproblems by setting 
(x + -0.5714285715) equal to 0.808122036 and -0.808122036.

Subproblem 1

x + -0.5714285715 = 0.808122036 Simplifying x + -0.5714285715 = 0.808122036 Reorder the terms: -0.5714285715 + x = 0.808122036 Solving -0.5714285715 + x = 0.808122036 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5714285715' to each side of the equation. -0.5714285715 + 0.5714285715 + x = 0.808122036 + 0.5714285715 Combine like terms: -0.5714285715 + 0.5714285715 = 0.0000000000 0.0000000000 + x = 0.808122036 + 0.5714285715 x = 0.808122036 + 0.5714285715 Combine like terms: 0.808122036 + 0.5714285715 = 1.3795506075 x = 1.3795506075 Simplifying x = 1.3795506075

Subproblem 2

x + -0.5714285715 = -0.808122036 Simplifying x + -0.5714285715 = -0.808122036 Reorder the terms: -0.5714285715 + x = -0.808122036 Solving -0.5714285715 + x = -0.808122036 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5714285715' to each side of the equation. -0.5714285715 + 0.5714285715 + x = -0.808122036 + 0.5714285715 Combine like terms: -0.5714285715 + 0.5714285715 = 0.0000000000 0.0000000000 + x = -0.808122036 + 0.5714285715 x = -0.808122036 + 0.5714285715 Combine like terms: -0.808122036 + 0.5714285715 = -0.2366934645 x = -0.2366934645 Simplifying x = -0.2366934645

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.3795506075, -0.2366934645}

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