25x^2+7x-6500=

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Solution for 25x^2+7x-6500= equation:


Simplifying
25x2 + 7x + -6500 = 0

Reorder the terms:
-6500 + 7x + 25x2 = 0

Solving
-6500 + 7x + 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'.
-260 + 0.28x + x2 = 0

Move the constant term to the right:

Add '260' to each side of the equation.
-260 + 0.28x + 260 + x2 = 0 + 260

Reorder the terms:
-260 + 260 + 0.28x + x2 = 0 + 260

Combine like terms: -260 + 260 = 0
0 + 0.28x + x2 = 0 + 260
0.28x + x2 = 0 + 260

Combine like terms: 0 + 260 = 260
0.28x + x2 = 260

The x term is 0.28x.  Take half its coefficient (0.14).
Square it (0.0196) and add it to both sides.

Add '0.0196' to each side of the equation.
0.28x + 0.0196 + x2 = 260 + 0.0196

Reorder the terms:
0.0196 + 0.28x + x2 = 260 + 0.0196

Combine like terms: 260 + 0.0196 = 260.0196
0.0196 + 0.28x + x2 = 260.0196

Factor a perfect square on the left side:
(x + 0.14)(x + 0.14) = 260.0196

Calculate the square root of the right side: 16.125123255

Break this problem into two subproblems by setting 
(x + 0.14) equal to 16.125123255 and -16.125123255.

Subproblem 1

x + 0.14 = 16.125123255 Simplifying x + 0.14 = 16.125123255 Reorder the terms: 0.14 + x = 16.125123255 Solving 0.14 + x = 16.125123255 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.14' to each side of the equation. 0.14 + -0.14 + x = 16.125123255 + -0.14 Combine like terms: 0.14 + -0.14 = 0.00 0.00 + x = 16.125123255 + -0.14 x = 16.125123255 + -0.14 Combine like terms: 16.125123255 + -0.14 = 15.985123255 x = 15.985123255 Simplifying x = 15.985123255

Subproblem 2

x + 0.14 = -16.125123255 Simplifying x + 0.14 = -16.125123255 Reorder the terms: 0.14 + x = -16.125123255 Solving 0.14 + x = -16.125123255 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.14' to each side of the equation. 0.14 + -0.14 + x = -16.125123255 + -0.14 Combine like terms: 0.14 + -0.14 = 0.00 0.00 + x = -16.125123255 + -0.14 x = -16.125123255 + -0.14 Combine like terms: -16.125123255 + -0.14 = -16.265123255 x = -16.265123255 Simplifying x = -16.265123255

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.985123255, -16.265123255}

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