25x^2+x-3=0

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Solution for 25x^2+x-3=0 equation:


Simplifying
25x2 + x + -3 = 0

Reorder the terms:
-3 + x + 25x2 = 0

Solving
-3 + x + 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'.
-0.12 + 0.04x + x2 = 0

Move the constant term to the right:

Add '0.12' to each side of the equation.
-0.12 + 0.04x + 0.12 + x2 = 0 + 0.12

Reorder the terms:
-0.12 + 0.12 + 0.04x + x2 = 0 + 0.12

Combine like terms: -0.12 + 0.12 = 0.00
0.00 + 0.04x + x2 = 0 + 0.12
0.04x + x2 = 0 + 0.12

Combine like terms: 0 + 0.12 = 0.12
0.04x + x2 = 0.12

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.04x + 0.25 + x2 = 0.12 + 0.25

Reorder the terms:
0.25 + 0.04x + x2 = 0.12 + 0.25

Combine like terms: 0.12 + 0.25 = 0.37
0.25 + 0.04x + x2 = 0.37

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.37

Calculate the square root of the right side: 0.608276253

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.608276253 and -0.608276253.

Subproblem 1

x + 0.5 = 0.608276253 Simplifying x + 0.5 = 0.608276253 Reorder the terms: 0.5 + x = 0.608276253 Solving 0.5 + x = 0.608276253 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.608276253 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.608276253 + -0.5 x = 0.608276253 + -0.5 Combine like terms: 0.608276253 + -0.5 = 0.108276253 x = 0.108276253 Simplifying x = 0.108276253

Subproblem 2

x + 0.5 = -0.608276253 Simplifying x + 0.5 = -0.608276253 Reorder the terms: 0.5 + x = -0.608276253 Solving 0.5 + x = -0.608276253 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.608276253 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.608276253 + -0.5 x = -0.608276253 + -0.5 Combine like terms: -0.608276253 + -0.5 = -1.108276253 x = -1.108276253 Simplifying x = -1.108276253

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.108276253, -1.108276253}

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