25x^2+24x-9=0

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Solution for 25x^2+24x-9=0 equation:


Simplifying
25x2 + 24x + -9 = 0

Reorder the terms:
-9 + 24x + 25x2 = 0

Solving
-9 + 24x + 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'.
-0.36 + 0.96x + x2 = 0

Move the constant term to the right:

Add '0.36' to each side of the equation.
-0.36 + 0.96x + 0.36 + x2 = 0 + 0.36

Reorder the terms:
-0.36 + 0.36 + 0.96x + x2 = 0 + 0.36

Combine like terms: -0.36 + 0.36 = 0.00
0.00 + 0.96x + x2 = 0 + 0.36
0.96x + x2 = 0 + 0.36

Combine like terms: 0 + 0.36 = 0.36
0.96x + x2 = 0.36

The x term is 0.96x.  Take half its coefficient (0.48).
Square it (0.2304) and add it to both sides.

Add '0.2304' to each side of the equation.
0.96x + 0.2304 + x2 = 0.36 + 0.2304

Reorder the terms:
0.2304 + 0.96x + x2 = 0.36 + 0.2304

Combine like terms: 0.36 + 0.2304 = 0.5904
0.2304 + 0.96x + x2 = 0.5904

Factor a perfect square on the left side:
(x + 0.48)(x + 0.48) = 0.5904

Calculate the square root of the right side: 0.768374908

Break this problem into two subproblems by setting 
(x + 0.48) equal to 0.768374908 and -0.768374908.

Subproblem 1

x + 0.48 = 0.768374908 Simplifying x + 0.48 = 0.768374908 Reorder the terms: 0.48 + x = 0.768374908 Solving 0.48 + x = 0.768374908 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.48' to each side of the equation. 0.48 + -0.48 + x = 0.768374908 + -0.48 Combine like terms: 0.48 + -0.48 = 0.00 0.00 + x = 0.768374908 + -0.48 x = 0.768374908 + -0.48 Combine like terms: 0.768374908 + -0.48 = 0.288374908 x = 0.288374908 Simplifying x = 0.288374908

Subproblem 2

x + 0.48 = -0.768374908 Simplifying x + 0.48 = -0.768374908 Reorder the terms: 0.48 + x = -0.768374908 Solving 0.48 + x = -0.768374908 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.48' to each side of the equation. 0.48 + -0.48 + x = -0.768374908 + -0.48 Combine like terms: 0.48 + -0.48 = 0.00 0.00 + x = -0.768374908 + -0.48 x = -0.768374908 + -0.48 Combine like terms: -0.768374908 + -0.48 = -1.248374908 x = -1.248374908 Simplifying x = -1.248374908

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.288374908, -1.248374908}

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