Why cant the log of a number ever be negative? prove it by trying to find log -2

What is coefficient of the term of degree of degree 5 in the polynomial below

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).

Quadrilateral abcd is a parallelogram with diagonals that intersect at point e. which of the following statements is true?