Write as a Set of Linear Factors 21x^2=-12x

$21 x^{2} = - 12 x$

Step 1

Add $12 x$ to both sides of the equation.

$21 x^{2} + 12 x = 0$

Step 2

Factor $3 x$ out of $21 x^{2} + 12 x$ .

Factor $3 x$ out of $21 x^{2}$ .

$3 x (7 x) + 12 x = 0$

Factor $3 x$ out of $12 x$ .

$3 x (7 x) + 3 x (4) = 0$

Factor $3 x$ out of $3 x (7 x) + 3 x (4)$ .

$3 x (7 x + 4) = 0$