14x^2+9x-3=0

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Solution for 14x^2+9x-3=0 equation:


Simplifying
14x2 + 9x + -3 = 0

Reorder the terms:
-3 + 9x + 14x2 = 0

Solving
-3 + 9x + 14x2 = 0

Solving for variable 'x'.

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

Divide each side by '14'.
-0.2142857143 + 0.6428571429x + x2 = 0

Move the constant term to the right:

Add '0.2142857143' to each side of the equation.
-0.2142857143 + 0.6428571429x + 0.2142857143 + x2 = 0 + 0.2142857143

Reorder the terms:
-0.2142857143 + 0.2142857143 + 0.6428571429x + x2 = 0 + 0.2142857143

Combine like terms: -0.2142857143 + 0.2142857143 = 0.0000000000
0.0000000000 + 0.6428571429x + x2 = 0 + 0.2142857143
0.6428571429x + x2 = 0 + 0.2142857143

Combine like terms: 0 + 0.2142857143 = 0.2142857143
0.6428571429x + x2 = 0.2142857143

The x term is 0.6428571429x.  Take half its coefficient (0.3214285715).
Square it (0.1033163266) and add it to both sides.

Add '0.1033163266' to each side of the equation.
0.6428571429x + 0.1033163266 + x2 = 0.2142857143 + 0.1033163266

Reorder the terms:
0.1033163266 + 0.6428571429x + x2 = 0.2142857143 + 0.1033163266

Combine like terms: 0.2142857143 + 0.1033163266 = 0.3176020409
0.1033163266 + 0.6428571429x + x2 = 0.3176020409

Factor a perfect square on the left side:
(x + 0.3214285715)(x + 0.3214285715) = 0.3176020409

Calculate the square root of the right side: 0.563561923

Break this problem into two subproblems by setting 
(x + 0.3214285715) equal to 0.563561923 and -0.563561923.

Subproblem 1

x + 0.3214285715 = 0.563561923 Simplifying x + 0.3214285715 = 0.563561923 Reorder the terms: 0.3214285715 + x = 0.563561923 Solving 0.3214285715 + x = 0.563561923 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3214285715' to each side of the equation. 0.3214285715 + -0.3214285715 + x = 0.563561923 + -0.3214285715 Combine like terms: 0.3214285715 + -0.3214285715 = 0.0000000000 0.0000000000 + x = 0.563561923 + -0.3214285715 x = 0.563561923 + -0.3214285715 Combine like terms: 0.563561923 + -0.3214285715 = 0.2421333515 x = 0.2421333515 Simplifying x = 0.2421333515

Subproblem 2

x + 0.3214285715 = -0.563561923 Simplifying x + 0.3214285715 = -0.563561923 Reorder the terms: 0.3214285715 + x = -0.563561923 Solving 0.3214285715 + x = -0.563561923 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3214285715' to each side of the equation. 0.3214285715 + -0.3214285715 + x = -0.563561923 + -0.3214285715 Combine like terms: 0.3214285715 + -0.3214285715 = 0.0000000000 0.0000000000 + x = -0.563561923 + -0.3214285715 x = -0.563561923 + -0.3214285715 Combine like terms: -0.563561923 + -0.3214285715 = -0.8849904945 x = -0.8849904945 Simplifying x = -0.8849904945

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.2421333515, -0.8849904945}

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