25(x)=5x^2-3

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Solution for 25(x)=5x^2-3 equation:


Simplifying
25(x) = 5x2 + -3

Reorder the terms:
25x = -3 + 5x2

Solving
25x = -3 + 5x2

Solving for variable 'x'.

Reorder the terms:
3 + 25x + -5x2 = -3 + 5x2 + 3 + -5x2

Reorder the terms:
3 + 25x + -5x2 = -3 + 3 + 5x2 + -5x2

Combine like terms: -3 + 3 = 0
3 + 25x + -5x2 = 0 + 5x2 + -5x2
3 + 25x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
3 + 25x + -5x2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-0.6 + -5x + x2 = 0

Move the constant term to the right:

Add '0.6' to each side of the equation.
-0.6 + -5x + 0.6 + x2 = 0 + 0.6

Reorder the terms:
-0.6 + 0.6 + -5x + x2 = 0 + 0.6

Combine like terms: -0.6 + 0.6 = 0.0
0.0 + -5x + x2 = 0 + 0.6
-5x + x2 = 0 + 0.6

Combine like terms: 0 + 0.6 = 0.6
-5x + x2 = 0.6

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 0.6 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 0.6 + 6.25

Combine like terms: 0.6 + 6.25 = 6.85
6.25 + -5x + x2 = 6.85

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 6.85

Calculate the square root of the right side: 2.617250466

Break this problem into two subproblems by setting 
(x + -2.5) equal to 2.617250466 and -2.617250466.

Subproblem 1

x + -2.5 = 2.617250466 Simplifying x + -2.5 = 2.617250466 Reorder the terms: -2.5 + x = 2.617250466 Solving -2.5 + x = 2.617250466 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 2.617250466 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 2.617250466 + 2.5 x = 2.617250466 + 2.5 Combine like terms: 2.617250466 + 2.5 = 5.117250466 x = 5.117250466 Simplifying x = 5.117250466

Subproblem 2

x + -2.5 = -2.617250466 Simplifying x + -2.5 = -2.617250466 Reorder the terms: -2.5 + x = -2.617250466 Solving -2.5 + x = -2.617250466 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -2.617250466 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -2.617250466 + 2.5 x = -2.617250466 + 2.5 Combine like terms: -2.617250466 + 2.5 = -0.117250466 x = -0.117250466 Simplifying x = -0.117250466

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.117250466, -0.117250466}

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