SOLUTION: Help,Please! take me for ever solve this problem,thanks in advance http://imageshack.us/photo/my-images/851/page672.jpg/ I need help number 7 and 19 the key number 7 , n=3 th

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Help,Please! take me for ever solve this problem,thanks in advance http://imageshack.us/photo/my-images/851/page672.jpg/ I need help number 7 and 19 the key number 7 , n=3 th      Log On


   

Question 475862: Help,Please! take me for ever solve this problem,thanks in advance
http://imageshack.us/photo/my-images/851/page672.jpg/
I need help number 7 and 19
the key number 7 , n=3
the key number 19 , n=3
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Find a counterexample for statement.
2%5En%2B3%5En is divisible by 4
answer:
n+=+0 --> 1+%2B+1+=+2 is NOT divisible by 4

Find a counterexample for statement.
2%5En%2B2n%5E2 is divisible by 4
answer:
n+=+0 --> 2%5E0+%2B+2%2A0%5E2+=+1%2B2%2A0=1 is NOT divisible by 4