0=3x(2x+5)

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Solution for 0=3x(2x+5) equation:


Simplifying
0 = 3x(2x + 5)

Reorder the terms:
0 = 3x(5 + 2x)
0 = (5 * 3x + 2x * 3x)
0 = (15x + 6x2)

Solving
0 = 15x + 6x2

Solving for variable 'x'.
Remove the zero:
-15x + -6x2 = 15x + 6x2 + -15x + -6x2

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

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

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

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

Ignore the factor -3.

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 '(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

Solution

x = {0, -2.5}

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