25x^2+50x-1=0

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Solution for 25x^2+50x-1=0 equation:


Simplifying
25x2 + 50x + -1 = 0

Reorder the terms:
-1 + 50x + 25x2 = 0

Solving
-1 + 50x + 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'.
-0.04 + 2x + x2 = 0

Move the constant term to the right:

Add '0.04' to each side of the equation.
-0.04 + 2x + 0.04 + x2 = 0 + 0.04

Reorder the terms:
-0.04 + 0.04 + 2x + x2 = 0 + 0.04

Combine like terms: -0.04 + 0.04 = 0.00
0.00 + 2x + x2 = 0 + 0.04
2x + x2 = 0 + 0.04

Combine like terms: 0 + 0.04 = 0.04
2x + x2 = 0.04

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 0.04 + 1

Reorder the terms:
1 + 2x + x2 = 0.04 + 1

Combine like terms: 0.04 + 1 = 1.04
1 + 2x + x2 = 1.04

Factor a perfect square on the left side:
(x + 1)(x + 1) = 1.04

Calculate the square root of the right side: 1.019803903

Break this problem into two subproblems by setting 
(x + 1) equal to 1.019803903 and -1.019803903.

Subproblem 1

x + 1 = 1.019803903 Simplifying x + 1 = 1.019803903 Reorder the terms: 1 + x = 1.019803903 Solving 1 + x = 1.019803903 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.019803903 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.019803903 + -1 x = 1.019803903 + -1 Combine like terms: 1.019803903 + -1 = 0.019803903 x = 0.019803903 Simplifying x = 0.019803903

Subproblem 2

x + 1 = -1.019803903 Simplifying x + 1 = -1.019803903 Reorder the terms: 1 + x = -1.019803903 Solving 1 + x = -1.019803903 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.019803903 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.019803903 + -1 x = -1.019803903 + -1 Combine like terms: -1.019803903 + -1 = -2.019803903 x = -2.019803903 Simplifying x = -2.019803903

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.019803903, -2.019803903}

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