N^2 + 2n + 1 = 2n + 50 - Square both sides
n^2 + 2n + 1 - 2n - 50 = 0
n^2 - 49 = 0 - simplify
(n + 7)(n - 7) = 0 factor
n + 7 = 0. n - 7 = 0
n = -7, n = 7
you have 2 answers
If the variables disappear and you get a statement that is never true,such as 0=5 or 4=7 then there is no solution meaning when graphed the two equations will form parallel lines which never interact
Answer:
The least common multiple of 4 and 30 is 60
Since 1/10=10^-1, and multiplying exponents with the same base just adds the actual exponents at the top, x=2
Jim drove 50 miles per hour
