15x^2+51x+9=-9

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Solution for 15x^2+51x+9=-9 equation:


Simplifying
15x2 + 51x + 9 = -9

Reorder the terms:
9 + 51x + 15x2 = -9

Solving
9 + 51x + 15x2 = -9

Solving for variable 'x'.

Reorder the terms:
9 + 9 + 51x + 15x2 = -9 + 9

Combine like terms: 9 + 9 = 18
18 + 51x + 15x2 = -9 + 9

Combine like terms: -9 + 9 = 0
18 + 51x + 15x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(6 + 17x + 5x2) = 0

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

Ignore the factor 3.

Subproblem 1

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(2 + 5x)' equal to zero and attempt to solve: Simplifying 2 + 5x = 0 Solving 2 + 5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 5x = 0 + -2 5x = 0 + -2 Combine like terms: 0 + -2 = -2 5x = -2 Divide each side by '5'. x = -0.4 Simplifying x = -0.4

Solution

x = {-3, -0.4}

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