42 : 2 = 21
21 : 3 = 7
7 : 7 = 1
42 = 2 · 3 · 7
15 : 3 = 5
5 : 5 = 1
15 = 3 · 5
GCF(42, 15) = 3
Answer:
um what kinda question is this?
Step-by-step explanation:
18 is your answer
B) 1.
x^2 - 8x + 7 = 0
(x - 1)(x - 7) = 0
x= 1, 7.
