Evaluate a2+ab-b2+5 when a=2 and b=3

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Which function has the domain x> -11? y= x+ 11 +5 y= x-11 +5 y= x+5 - 11 y= x+5 + 11