3x(x+7)(x-2)=0

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Solution for 3x(x+7)(x-2)=0 equation: 


Simplifying
3x(x + 7)(x + -2) = 0

Reorder the terms:
3x(7 + x)(x + -2) = 0

Reorder the terms:
3x(7 + x)(-2 + x) = 0

Multiply (7 + x) * (-2 + x)
3x(7(-2 + x) + x(-2 + x)) = 0
3x((-2 * 7 + x * 7) + x(-2 + x)) = 0
3x((-14 + 7x) + x(-2 + x)) = 0
3x(-14 + 7x + (-2 * x + x * x)) = 0
3x(-14 + 7x + (-2x + x2)) = 0

Combine like terms: 7x + -2x = 5x
3x(-14 + 5x + x2) = 0
(-14 * 3x + 5x * 3x + x2 * 3x) = 0
(-42x + 15x2 + 3x3) = 0

Solving
-42x + 15x2 + 3x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-14 + 5x + x2) = 0

Factor a trinomial.
3x((-7 + -1x)(2 + -1x)) = 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 '(-7 + -1x)' equal to zero and attempt to solve:

Simplifying
-7 + -1x = 0

Solving
-7 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + 7 + -1x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -1x = 0 + 7
-1x = 0 + 7

Combine like terms: 0 + 7 = 7
-1x = 7

Divide each side by '-1'.
x = -7

Simplifying
x = -7

Subproblem 3
Set the factor '(2 + -1x)' equal to zero and attempt to solve:

Simplifying
2 + -1x = 0

Solving
2 + -1x = 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 + -1x = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1x = 0 + -2
-1x = 0 + -2

Combine like terms: 0 + -2 = -2
-1x = -2

Divide each side by '-1'.
x = 2

Simplifying
x = 2
Solution
x = {0, -7, 2}

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