0=-x^2-3x

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


Simplifying
0 = -1x2 + -3x

Reorder the terms:
0 = -3x + -1x2

Solving
0 = -3x + -1x2

Solving for variable 'x'.
Remove the zero:
3x + x2 = -3x + -1x2 + 3x + x2

Reorder the terms:
3x + x2 = -3x + 3x + -1x2 + x2

Combine like terms: -3x + 3x = 0
3x + x2 = 0 + -1x2 + x2
3x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
3x + x2 = 0

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

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

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

Solution

x = {0, -3}

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