The angles of a quadrilateral are 5x-30, 4x+60, 60-x and 3x+61.find the smallest of these angles​
What is the n-th term of the sequence 2, 6, 12, 20...?
If the binary operation \(\ast\) is defined by m \(\ast\) n = mn + m + n for any real number m and n, find the identity of the elements under this operation
Factorize completely 81a\(^4\) - 16b\(^4\)
