Question

Please tell me the answer ​

Answer 1

Answer:

Answer is 15 z cube

Step-by-step explanation:

correct answer

Answer 2

$\huge\underline\mathrm\gray{Answer}$

$9 + 6z + z {}^{2} \\ z {}^{2} + 6z + 9 \\ z {}^{2} + 3z + 3z + 9 \\ z(z + 3) + 3(z + 3) \\ (z + 3)(z + 3)$