8x^2-24x-35=0

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Solution for 8x^2-24x-35=0 equation:


Simplifying
8x2 + -24x + -35 = 0

Reorder the terms:
-35 + -24x + 8x2 = 0

Solving
-35 + -24x + 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'.
-4.375 + -3x + x2 = 0

Move the constant term to the right:

Add '4.375' to each side of the equation.
-4.375 + -3x + 4.375 + x2 = 0 + 4.375

Reorder the terms:
-4.375 + 4.375 + -3x + x2 = 0 + 4.375

Combine like terms: -4.375 + 4.375 = 0.000
0.000 + -3x + x2 = 0 + 4.375
-3x + x2 = 0 + 4.375

Combine like terms: 0 + 4.375 = 4.375
-3x + x2 = 4.375

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 4.375 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 4.375 + 2.25

Combine like terms: 4.375 + 2.25 = 6.625
2.25 + -3x + x2 = 6.625

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 6.625

Calculate the square root of the right side: 2.573907535

Break this problem into two subproblems by setting 
(x + -1.5) equal to 2.573907535 and -2.573907535.

Subproblem 1

x + -1.5 = 2.573907535 Simplifying x + -1.5 = 2.573907535 Reorder the terms: -1.5 + x = 2.573907535 Solving -1.5 + x = 2.573907535 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 2.573907535 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 2.573907535 + 1.5 x = 2.573907535 + 1.5 Combine like terms: 2.573907535 + 1.5 = 4.073907535 x = 4.073907535 Simplifying x = 4.073907535

Subproblem 2

x + -1.5 = -2.573907535 Simplifying x + -1.5 = -2.573907535 Reorder the terms: -1.5 + x = -2.573907535 Solving -1.5 + x = -2.573907535 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -2.573907535 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -2.573907535 + 1.5 x = -2.573907535 + 1.5 Combine like terms: -2.573907535 + 1.5 = -1.073907535 x = -1.073907535 Simplifying x = -1.073907535

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.073907535, -1.073907535}

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