8x^2-25x-24=0

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Solution for 8x^2-25x-24=0 equation:


Simplifying
8x2 + -25x + -24 = 0

Reorder the terms:
-24 + -25x + 8x2 = 0

Solving
-24 + -25x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
-3 + -3.125x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -3.125x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -3.125x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -3.125x + x2 = 0 + 3
-3.125x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-3.125x + x2 = 3

The x term is -3.125x.  Take half its coefficient (-1.5625).
Square it (2.44140625) and add it to both sides.

Add '2.44140625' to each side of the equation.
-3.125x + 2.44140625 + x2 = 3 + 2.44140625

Reorder the terms:
2.44140625 + -3.125x + x2 = 3 + 2.44140625

Combine like terms: 3 + 2.44140625 = 5.44140625
2.44140625 + -3.125x + x2 = 5.44140625

Factor a perfect square on the left side:
(x + -1.5625)(x + -1.5625) = 5.44140625

Calculate the square root of the right side: 2.332682201

Break this problem into two subproblems by setting 
(x + -1.5625) equal to 2.332682201 and -2.332682201.

Subproblem 1

x + -1.5625 = 2.332682201 Simplifying x + -1.5625 = 2.332682201 Reorder the terms: -1.5625 + x = 2.332682201 Solving -1.5625 + x = 2.332682201 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5625' to each side of the equation. -1.5625 + 1.5625 + x = 2.332682201 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + x = 2.332682201 + 1.5625 x = 2.332682201 + 1.5625 Combine like terms: 2.332682201 + 1.5625 = 3.895182201 x = 3.895182201 Simplifying x = 3.895182201

Subproblem 2

x + -1.5625 = -2.332682201 Simplifying x + -1.5625 = -2.332682201 Reorder the terms: -1.5625 + x = -2.332682201 Solving -1.5625 + x = -2.332682201 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5625' to each side of the equation. -1.5625 + 1.5625 + x = -2.332682201 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + x = -2.332682201 + 1.5625 x = -2.332682201 + 1.5625 Combine like terms: -2.332682201 + 1.5625 = -0.770182201 x = -0.770182201 Simplifying x = -0.770182201

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.895182201, -0.770182201}

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