49x^2+70x=6

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Solution for 49x^2+70x=6 equation:


Simplifying
49x2 + 70x = 6

Reorder the terms:
70x + 49x2 = 6

Solving
70x + 49x2 = 6

Solving for variable 'x'.

Reorder the terms:
-6 + 70x + 49x2 = 6 + -6

Combine like terms: 6 + -6 = 0
-6 + 70x + 49x2 = 0

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

Divide each side by '49'.
-0.1224489796 + 1.428571429x + x2 = 0

Move the constant term to the right:

Add '0.1224489796' to each side of the equation.
-0.1224489796 + 1.428571429x + 0.1224489796 + x2 = 0 + 0.1224489796

Reorder the terms:
-0.1224489796 + 0.1224489796 + 1.428571429x + x2 = 0 + 0.1224489796

Combine like terms: -0.1224489796 + 0.1224489796 = 0.0000000000
0.0000000000 + 1.428571429x + x2 = 0 + 0.1224489796
1.428571429x + x2 = 0 + 0.1224489796

Combine like terms: 0 + 0.1224489796 = 0.1224489796
1.428571429x + x2 = 0.1224489796

The x term is 1.428571429x.  Take half its coefficient (0.7142857145).
Square it (0.5102040819) and add it to both sides.

Add '0.5102040819' to each side of the equation.
1.428571429x + 0.5102040819 + x2 = 0.1224489796 + 0.5102040819

Reorder the terms:
0.5102040819 + 1.428571429x + x2 = 0.1224489796 + 0.5102040819

Combine like terms: 0.1224489796 + 0.5102040819 = 0.6326530615
0.5102040819 + 1.428571429x + x2 = 0.6326530615

Factor a perfect square on the left side:
(x + 0.7142857145)(x + 0.7142857145) = 0.6326530615

Calculate the square root of the right side: 0.795394909

Break this problem into two subproblems by setting 
(x + 0.7142857145) equal to 0.795394909 and -0.795394909.

Subproblem 1

x + 0.7142857145 = 0.795394909 Simplifying x + 0.7142857145 = 0.795394909 Reorder the terms: 0.7142857145 + x = 0.795394909 Solving 0.7142857145 + x = 0.795394909 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7142857145' to each side of the equation. 0.7142857145 + -0.7142857145 + x = 0.795394909 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = 0.795394909 + -0.7142857145 x = 0.795394909 + -0.7142857145 Combine like terms: 0.795394909 + -0.7142857145 = 0.0811091945 x = 0.0811091945 Simplifying x = 0.0811091945

Subproblem 2

x + 0.7142857145 = -0.795394909 Simplifying x + 0.7142857145 = -0.795394909 Reorder the terms: 0.7142857145 + x = -0.795394909 Solving 0.7142857145 + x = -0.795394909 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7142857145' to each side of the equation. 0.7142857145 + -0.7142857145 + x = -0.795394909 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = -0.795394909 + -0.7142857145 x = -0.795394909 + -0.7142857145 Combine like terms: -0.795394909 + -0.7142857145 = -1.5096806235 x = -1.5096806235 Simplifying x = -1.5096806235

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.0811091945, -1.5096806235}

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