49x^2+70x+25=10

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Solution for 49x^2+70x+25=10 equation:


Simplifying
49x2 + 70x + 25 = 10

Reorder the terms:
25 + 70x + 49x2 = 10

Solving
25 + 70x + 49x2 = 10

Solving for variable 'x'.

Reorder the terms:
25 + -10 + 70x + 49x2 = 10 + -10

Combine like terms: 25 + -10 = 15
15 + 70x + 49x2 = 10 + -10

Combine like terms: 10 + -10 = 0
15 + 70x + 49x2 = 0

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

Divide each side by '49'.
0.306122449 + 1.428571429x + x2 = 0

Move the constant term to the right:

Add '-0.306122449' to each side of the equation.
0.306122449 + 1.428571429x + -0.306122449 + x2 = 0 + -0.306122449

Reorder the terms:
0.306122449 + -0.306122449 + 1.428571429x + x2 = 0 + -0.306122449

Combine like terms: 0.306122449 + -0.306122449 = 0.000000000
0.000000000 + 1.428571429x + x2 = 0 + -0.306122449
1.428571429x + x2 = 0 + -0.306122449

Combine like terms: 0 + -0.306122449 = -0.306122449
1.428571429x + x2 = -0.306122449

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 = -0.306122449 + 0.5102040819

Reorder the terms:
0.5102040819 + 1.428571429x + x2 = -0.306122449 + 0.5102040819

Combine like terms: -0.306122449 + 0.5102040819 = 0.2040816329
0.5102040819 + 1.428571429x + x2 = 0.2040816329

Factor a perfect square on the left side:
(x + 0.7142857145)(x + 0.7142857145) = 0.2040816329

Calculate the square root of the right side: 0.451753952

Break this problem into two subproblems by setting 
(x + 0.7142857145) equal to 0.451753952 and -0.451753952.

Subproblem 1

x + 0.7142857145 = 0.451753952 Simplifying x + 0.7142857145 = 0.451753952 Reorder the terms: 0.7142857145 + x = 0.451753952 Solving 0.7142857145 + x = 0.451753952 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 = 0.451753952 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = 0.451753952 + -0.7142857145 x = 0.451753952 + -0.7142857145 Combine like terms: 0.451753952 + -0.7142857145 = -0.2625317625 x = -0.2625317625 Simplifying x = -0.2625317625

Subproblem 2

x + 0.7142857145 = -0.451753952 Simplifying x + 0.7142857145 = -0.451753952 Reorder the terms: 0.7142857145 + x = -0.451753952 Solving 0.7142857145 + x = -0.451753952 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 = -0.451753952 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = -0.451753952 + -0.7142857145 x = -0.451753952 + -0.7142857145 Combine like terms: -0.451753952 + -0.7142857145 = -1.1660396665 x = -1.1660396665 Simplifying x = -1.1660396665

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.2625317625, -1.1660396665}

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