0=6x^2+15x-75

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Solution for 0=6x^2+15x-75 equation:


Simplifying
0 = 6x2 + 15x + -75

Reorder the terms:
0 = -75 + 15x + 6x2

Solving
0 = -75 + 15x + 6x2

Solving for variable 'x'.

Combine like terms: 0 + 75 = 75
75 + -15x + -6x2 = -75 + 15x + 6x2 + 75 + -15x + -6x2

Reorder the terms:
75 + -15x + -6x2 = -75 + 75 + 15x + -15x + 6x2 + -6x2

Combine like terms: -75 + 75 = 0
75 + -15x + -6x2 = 0 + 15x + -15x + 6x2 + -6x2
75 + -15x + -6x2 = 15x + -15x + 6x2 + -6x2

Combine like terms: 15x + -15x = 0
75 + -15x + -6x2 = 0 + 6x2 + -6x2
75 + -15x + -6x2 = 6x2 + -6x2

Combine like terms: 6x2 + -6x2 = 0
75 + -15x + -6x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(25 + -5x + -2x2) = 0

Factor a trinomial.
3((5 + -2x)(5 + x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 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 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5

Subproblem 2

Set the factor '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 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 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5

Solution

x = {2.5, -5}

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