0=4x^2+5x-125

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Solution for 0=4x^2+5x-125 equation:


Simplifying
0 = 4x2 + 5x + -125

Reorder the terms:
0 = -125 + 5x + 4x2

Solving
0 = -125 + 5x + 4x2

Solving for variable 'x'.

Combine like terms: 0 + 125 = 125
125 + -5x + -4x2 = -125 + 5x + 4x2 + 125 + -5x + -4x2

Reorder the terms:
125 + -5x + -4x2 = -125 + 125 + 5x + -5x + 4x2 + -4x2

Combine like terms: -125 + 125 = 0
125 + -5x + -4x2 = 0 + 5x + -5x + 4x2 + -4x2
125 + -5x + -4x2 = 5x + -5x + 4x2 + -4x2

Combine like terms: 5x + -5x = 0
125 + -5x + -4x2 = 0 + 4x2 + -4x2
125 + -5x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
125 + -5x + -4x2 = 0

Factor a trinomial.
(5 + -1x)(25 + 4x) = 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 '(25 + 4x)' equal to zero and attempt to solve: Simplifying 25 + 4x = 0 Solving 25 + 4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + 4x = 0 + -25 Combine like terms: 25 + -25 = 0 0 + 4x = 0 + -25 4x = 0 + -25 Combine like terms: 0 + -25 = -25 4x = -25 Divide each side by '4'. x = -6.25 Simplifying x = -6.25

Solution

x = {5, -6.25}

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