Answer:
-6 & 12
Step-by-step explanation:
[n² - 2(n)(3) + 3²] - 3² = 72
(n-3)² - 9 = 72
(n-3)² = 81
(n-3) = +/- 9
n-3 = 9 n = 12
n-3 = -9 n = -6
