Answer:
x² +18x +81
Step-by-step explanation:
(a+b)²=a²+b²+2ab
(x+9)² = x²+9²+2*x*9= x² +18x +81
Answer:
an=6+6(n-1)
Step-by-step explanation:
Answer:
c. 25
Step-by-step explanation:
Answer:
1/24
Step-by-step explanation:
1/3 = 8/24
3/8 = 9/24
9/24 - 8/24 = 1/24