Factor 3z-21xz^4

$3 z - 21 x z^{4}$

Step 1

Factor $3 z$ out of $3 z$ .

$3 z (1) - 21 x z^{4}$

Step 2

Factor $3 z$ out of $- 21 x z^{4}$ .

$3 z (1) + 3 z (- 7 x z^{3})$

Step 3

Factor $3 z$ out of $3 z (1) + 3 z (- 7 x z^{3})$ .

$3 z (1 - 7 x z^{3})$