0=5x^2-3x-8

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Solution for 0=5x^2-3x-8 equation:


Simplifying
0 = 5x2 + -3x + -8

Reorder the terms:
0 = -8 + -3x + 5x2

Solving
0 = -8 + -3x + 5x2

Solving for variable 'x'.

Combine like terms: 0 + 8 = 8
8 + 3x + -5x2 = -8 + -3x + 5x2 + 8 + 3x + -5x2

Reorder the terms:
8 + 3x + -5x2 = -8 + 8 + -3x + 3x + 5x2 + -5x2

Combine like terms: -8 + 8 = 0
8 + 3x + -5x2 = 0 + -3x + 3x + 5x2 + -5x2
8 + 3x + -5x2 = -3x + 3x + 5x2 + -5x2

Combine like terms: -3x + 3x = 0
8 + 3x + -5x2 = 0 + 5x2 + -5x2
8 + 3x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
8 + 3x + -5x2 = 0

Factor a trinomial.
(8 + -5x)(1 + x) = 0

Subproblem 1

Set the factor '(8 + -5x)' equal to zero and attempt to solve: Simplifying 8 + -5x = 0 Solving 8 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -5x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -5x = 0 + -8 -5x = 0 + -8 Combine like terms: 0 + -8 = -8 -5x = -8 Divide each side by '-5'. x = 1.6 Simplifying x = 1.6

Subproblem 2

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {1.6, -1}

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