25x^2-14x-23=0

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Solution for 25x^2-14x-23=0 equation:


Simplifying
25x2 + -14x + -23 = 0

Reorder the terms:
-23 + -14x + 25x2 = 0

Solving
-23 + -14x + 25x2 = 0

Solving for variable 'x'.

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

Divide each side by '25'.
-0.92 + -0.56x + x2 = 0

Move the constant term to the right:

Add '0.92' to each side of the equation.
-0.92 + -0.56x + 0.92 + x2 = 0 + 0.92

Reorder the terms:
-0.92 + 0.92 + -0.56x + x2 = 0 + 0.92

Combine like terms: -0.92 + 0.92 = 0.00
0.00 + -0.56x + x2 = 0 + 0.92
-0.56x + x2 = 0 + 0.92

Combine like terms: 0 + 0.92 = 0.92
-0.56x + x2 = 0.92

The x term is -0.56x.  Take half its coefficient (-0.28).
Square it (0.0784) and add it to both sides.

Add '0.0784' to each side of the equation.
-0.56x + 0.0784 + x2 = 0.92 + 0.0784

Reorder the terms:
0.0784 + -0.56x + x2 = 0.92 + 0.0784

Combine like terms: 0.92 + 0.0784 = 0.9984
0.0784 + -0.56x + x2 = 0.9984

Factor a perfect square on the left side:
(x + -0.28)(x + -0.28) = 0.9984

Calculate the square root of the right side: 0.99919968

Break this problem into two subproblems by setting 
(x + -0.28) equal to 0.99919968 and -0.99919968.

Subproblem 1

x + -0.28 = 0.99919968 Simplifying x + -0.28 = 0.99919968 Reorder the terms: -0.28 + x = 0.99919968 Solving -0.28 + x = 0.99919968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.28' to each side of the equation. -0.28 + 0.28 + x = 0.99919968 + 0.28 Combine like terms: -0.28 + 0.28 = 0.00 0.00 + x = 0.99919968 + 0.28 x = 0.99919968 + 0.28 Combine like terms: 0.99919968 + 0.28 = 1.27919968 x = 1.27919968 Simplifying x = 1.27919968

Subproblem 2

x + -0.28 = -0.99919968 Simplifying x + -0.28 = -0.99919968 Reorder the terms: -0.28 + x = -0.99919968 Solving -0.28 + x = -0.99919968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.28' to each side of the equation. -0.28 + 0.28 + x = -0.99919968 + 0.28 Combine like terms: -0.28 + 0.28 = 0.00 0.00 + x = -0.99919968 + 0.28 x = -0.99919968 + 0.28 Combine like terms: -0.99919968 + 0.28 = -0.71919968 x = -0.71919968 Simplifying x = -0.71919968

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.27919968, -0.71919968}

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