Pre-Algebra Examples

$3 x (x + 4) = 0$

Step 1

If any individual factor on the left side of the equation is equal to $0$ , the entire expression will be equal to $0$ .

$x = 0$

$x + 4 = 0$

Step 2

Set $x$ equal to $0$ .

$x = 0$

Step 3

Set $x + 4$ equal to $0$ and solve for $x$ .

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Step 3.1

Set $x + 4$ equal to $0$ .

$x + 4 = 0$

Step 3.2

Subtract $4$ from both sides of the equation.

$x = - 4$

Step 4

The final solution is all the values that make $3 x (x + 4) = 0$ true.

$x = 0, - 4$