10x^2-14x-3=

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Solution for 10x^2-14x-3= equation:


Simplifying
10x2 + -14x + -3 = 0

Reorder the terms:
-3 + -14x + 10x2 = 0

Solving
-3 + -14x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-0.3 + -1.4x + x2 = 0

Move the constant term to the right:

Add '0.3' to each side of the equation.
-0.3 + -1.4x + 0.3 + x2 = 0 + 0.3

Reorder the terms:
-0.3 + 0.3 + -1.4x + x2 = 0 + 0.3

Combine like terms: -0.3 + 0.3 = 0.0
0.0 + -1.4x + x2 = 0 + 0.3
-1.4x + x2 = 0 + 0.3

Combine like terms: 0 + 0.3 = 0.3
-1.4x + x2 = 0.3

The x term is -1.4x.  Take half its coefficient (-0.7).
Square it (0.49) and add it to both sides.

Add '0.49' to each side of the equation.
-1.4x + 0.49 + x2 = 0.3 + 0.49

Reorder the terms:
0.49 + -1.4x + x2 = 0.3 + 0.49

Combine like terms: 0.3 + 0.49 = 0.79
0.49 + -1.4x + x2 = 0.79

Factor a perfect square on the left side:
(x + -0.7)(x + -0.7) = 0.79

Calculate the square root of the right side: 0.888819442

Break this problem into two subproblems by setting 
(x + -0.7) equal to 0.888819442 and -0.888819442.

Subproblem 1

x + -0.7 = 0.888819442 Simplifying x + -0.7 = 0.888819442 Reorder the terms: -0.7 + x = 0.888819442 Solving -0.7 + x = 0.888819442 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7' to each side of the equation. -0.7 + 0.7 + x = 0.888819442 + 0.7 Combine like terms: -0.7 + 0.7 = 0.0 0.0 + x = 0.888819442 + 0.7 x = 0.888819442 + 0.7 Combine like terms: 0.888819442 + 0.7 = 1.588819442 x = 1.588819442 Simplifying x = 1.588819442

Subproblem 2

x + -0.7 = -0.888819442 Simplifying x + -0.7 = -0.888819442 Reorder the terms: -0.7 + x = -0.888819442 Solving -0.7 + x = -0.888819442 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7' to each side of the equation. -0.7 + 0.7 + x = -0.888819442 + 0.7 Combine like terms: -0.7 + 0.7 = 0.0 0.0 + x = -0.888819442 + 0.7 x = -0.888819442 + 0.7 Combine like terms: -0.888819442 + 0.7 = -0.188819442 x = -0.188819442 Simplifying x = -0.188819442

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.588819442, -0.188819442}

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