25x^2+3x-4=5

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Solution for 25x^2+3x-4=5 equation:


Simplifying
25x2 + 3x + -4 = 5

Reorder the terms:
-4 + 3x + 25x2 = 5

Solving
-4 + 3x + 25x2 = 5

Solving for variable 'x'.

Reorder the terms:
-4 + -5 + 3x + 25x2 = 5 + -5

Combine like terms: -4 + -5 = -9
-9 + 3x + 25x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-9 + 3x + 25x2 = 0

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

Divide each side by '25'.
-0.36 + 0.12x + x2 = 0

Move the constant term to the right:

Add '0.36' to each side of the equation.
-0.36 + 0.12x + 0.36 + x2 = 0 + 0.36

Reorder the terms:
-0.36 + 0.36 + 0.12x + x2 = 0 + 0.36

Combine like terms: -0.36 + 0.36 = 0.00
0.00 + 0.12x + x2 = 0 + 0.36
0.12x + x2 = 0 + 0.36

Combine like terms: 0 + 0.36 = 0.36
0.12x + x2 = 0.36

The x term is 0.12x.  Take half its coefficient (0.06).
Square it (0.0036) and add it to both sides.

Add '0.0036' to each side of the equation.
0.12x + 0.0036 + x2 = 0.36 + 0.0036

Reorder the terms:
0.0036 + 0.12x + x2 = 0.36 + 0.0036

Combine like terms: 0.36 + 0.0036 = 0.3636
0.0036 + 0.12x + x2 = 0.3636

Factor a perfect square on the left side:
(x + 0.06)(x + 0.06) = 0.3636

Calculate the square root of the right side: 0.602992537

Break this problem into two subproblems by setting 
(x + 0.06) equal to 0.602992537 and -0.602992537.

Subproblem 1

x + 0.06 = 0.602992537 Simplifying x + 0.06 = 0.602992537 Reorder the terms: 0.06 + x = 0.602992537 Solving 0.06 + x = 0.602992537 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.06' to each side of the equation. 0.06 + -0.06 + x = 0.602992537 + -0.06 Combine like terms: 0.06 + -0.06 = 0.00 0.00 + x = 0.602992537 + -0.06 x = 0.602992537 + -0.06 Combine like terms: 0.602992537 + -0.06 = 0.542992537 x = 0.542992537 Simplifying x = 0.542992537

Subproblem 2

x + 0.06 = -0.602992537 Simplifying x + 0.06 = -0.602992537 Reorder the terms: 0.06 + x = -0.602992537 Solving 0.06 + x = -0.602992537 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.06' to each side of the equation. 0.06 + -0.06 + x = -0.602992537 + -0.06 Combine like terms: 0.06 + -0.06 = 0.00 0.00 + x = -0.602992537 + -0.06 x = -0.602992537 + -0.06 Combine like terms: -0.602992537 + -0.06 = -0.662992537 x = -0.662992537 Simplifying x = -0.662992537

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.542992537, -0.662992537}

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