There is no common factor between 15, 17 and 18 because 17 is prime.
15z² +17z - 18 =
d = 17² - 4.15.-18
d = 289 + 1080
d = 1369
z = (-17 +/- \/1369) : 2 * 15
z = (-17 + 37) : 30
z' = 20 : 30 = 2/3
z" = (-17 - 37) : 30
z" = -54 : 30 = -1.8
<><
Answer:
1.2%
Step-by-step explanation:
I did math
Answer:
the 15th term is 11
Step-by-step explanation:
common difference is= -4
first term is 67
Answer:
ill give you this math app that will give u answers
Step-by-step explanation:
https://www.cymath.com/answer?q=1%2B1 there u go
