0=5x^2-2x-115

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Solution for 0=5x^2-2x-115 equation:


Simplifying
0 = 5x2 + -2x + -115

Reorder the terms:
0 = -115 + -2x + 5x2

Solving
0 = -115 + -2x + 5x2

Solving for variable 'x'.

Combine like terms: 0 + 115 = 115
115 + 2x + -5x2 = -115 + -2x + 5x2 + 115 + 2x + -5x2

Reorder the terms:
115 + 2x + -5x2 = -115 + 115 + -2x + 2x + 5x2 + -5x2

Combine like terms: -115 + 115 = 0
115 + 2x + -5x2 = 0 + -2x + 2x + 5x2 + -5x2
115 + 2x + -5x2 = -2x + 2x + 5x2 + -5x2

Combine like terms: -2x + 2x = 0
115 + 2x + -5x2 = 0 + 5x2 + -5x2
115 + 2x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
115 + 2x + -5x2 = 0

Factor a trinomial.
(5 + -1x)(23 + 5x) = 0

Subproblem 1

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Subproblem 2

Set the factor '(23 + 5x)' equal to zero and attempt to solve: Simplifying 23 + 5x = 0 Solving 23 + 5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-23' to each side of the equation. 23 + -23 + 5x = 0 + -23 Combine like terms: 23 + -23 = 0 0 + 5x = 0 + -23 5x = 0 + -23 Combine like terms: 0 + -23 = -23 5x = -23 Divide each side by '5'. x = -4.6 Simplifying x = -4.6

Solution

x = {5, -4.6}

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