0=-2x^2(x+9)

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Solution for 0=-2x^2(x+9) equation:


Simplifying
0 = -2x2(x + 9)

Reorder the terms:
0 = -2x2(9 + x)
0 = (9 * -2x2 + x * -2x2)
0 = (-18x2 + -2x3)

Solving
0 = -18x2 + -2x3

Solving for variable 'x'.
Remove the zero:
18x2 + 2x3 = -18x2 + -2x3 + 18x2 + 2x3

Reorder the terms:
18x2 + 2x3 = -18x2 + 18x2 + -2x3 + 2x3

Combine like terms: -18x2 + 18x2 = 0
18x2 + 2x3 = 0 + -2x3 + 2x3
18x2 + 2x3 = -2x3 + 2x3

Combine like terms: -2x3 + 2x3 = 0
18x2 + 2x3 = 0

Factor out the Greatest Common Factor (GCF), '2x2'.
2x2(9 + x) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}

Subproblem 2

Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9

Solution

x = {0, -9}

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