Algebra Examples

$18 c - 21 d$

Step 1

Factor $3$ out of $18 c - 21 d$ .

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Step 1.1

Factor $3$ out of $18 c$ .

$3 (6 c) - 21 d$

Step 1.2

Factor $3$ out of $- 21 d$ .

$3 (6 c) + 3 (- 7 d)$

Step 1.3

Factor $3$ out of $3 (6 c) + 3 (- 7 d)$ .

$3 (6 c - 7 d)$

Step 2

Since the polynomial can be factored, it is not prime.

Not prime