(x)=3x^2+9x

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Solution for (x)=3x^2+9x equation:


Simplifying
(x) = 3x2 + 9x
x = 3x2 + 9x

Reorder the terms:
x = 9x + 3x2

Solving
x = 9x + 3x2

Solving for variable 'x'.

Combine like terms: x + -9x = -8x
-8x + -3x2 = 9x + 3x2 + -9x + -3x2

Reorder the terms:
-8x + -3x2 = 9x + -9x + 3x2 + -3x2

Combine like terms: 9x + -9x = 0
-8x + -3x2 = 0 + 3x2 + -3x2
-8x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-8x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '-1x'.
-1x(8 + 3x) = 0

Ignore the factor -1.

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 '(8 + 3x)' equal to zero and attempt to solve: Simplifying 8 + 3x = 0 Solving 8 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 3x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 3x = 0 + -8 3x = 0 + -8 Combine like terms: 0 + -8 = -8 3x = -8 Divide each side by '3'. x = -2.666666667 Simplifying x = -2.666666667

Solution

x = {0, -2.666666667}

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