It's not clear whether you meant 30n^(2b) or [30n^2] b.
I will assume the latter.
b can then be factored out of all three terms, resulting in
b [30n^2 - 87n + 30] = b [ 3 ] [10n^2 - 29n + 10 ]
Can you factor this further?
Subtract 43 from 180 as the sum of a triangle adds up to 180 degrees.
180 - 43 = 137
:)
Answer:
b because c 13 is too far away for one coordinate were it is not too long and to short
Step-by-step explanation: