7x^2+10x-62=0

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Solution for 7x^2+10x-62=0 equation:


Simplifying
7x2 + 10x + -62 = 0

Reorder the terms:
-62 + 10x + 7x2 = 0

Solving
-62 + 10x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
-8.857142857 + 1.428571429x + x2 = 0

Move the constant term to the right:

Add '8.857142857' to each side of the equation.
-8.857142857 + 1.428571429x + 8.857142857 + x2 = 0 + 8.857142857

Reorder the terms:
-8.857142857 + 8.857142857 + 1.428571429x + x2 = 0 + 8.857142857

Combine like terms: -8.857142857 + 8.857142857 = 0.000000000
0.000000000 + 1.428571429x + x2 = 0 + 8.857142857
1.428571429x + x2 = 0 + 8.857142857

Combine like terms: 0 + 8.857142857 = 8.857142857
1.428571429x + x2 = 8.857142857

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 = 8.857142857 + 0.5102040819

Reorder the terms:
0.5102040819 + 1.428571429x + x2 = 8.857142857 + 0.5102040819

Combine like terms: 8.857142857 + 0.5102040819 = 9.3673469389
0.5102040819 + 1.428571429x + x2 = 9.3673469389

Factor a perfect square on the left side:
(x + 0.7142857145)(x + 0.7142857145) = 9.3673469389

Calculate the square root of the right side: 3.060612184

Break this problem into two subproblems by setting 
(x + 0.7142857145) equal to 3.060612184 and -3.060612184.

Subproblem 1

x + 0.7142857145 = 3.060612184 Simplifying x + 0.7142857145 = 3.060612184 Reorder the terms: 0.7142857145 + x = 3.060612184 Solving 0.7142857145 + x = 3.060612184 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 = 3.060612184 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = 3.060612184 + -0.7142857145 x = 3.060612184 + -0.7142857145 Combine like terms: 3.060612184 + -0.7142857145 = 2.3463264695 x = 2.3463264695 Simplifying x = 2.3463264695

Subproblem 2

x + 0.7142857145 = -3.060612184 Simplifying x + 0.7142857145 = -3.060612184 Reorder the terms: 0.7142857145 + x = -3.060612184 Solving 0.7142857145 + x = -3.060612184 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 = -3.060612184 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = -3.060612184 + -0.7142857145 x = -3.060612184 + -0.7142857145 Combine like terms: -3.060612184 + -0.7142857145 = -3.7748978985 x = -3.7748978985 Simplifying x = -3.7748978985

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.3463264695, -3.7748978985}

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