The value of 3x² – 5x + 3 when x = 1 is

The number of scarfs of length half metre that can be made from y metres of cloth is :

123x²y – 138x²y is a like term of :

The expression for the number of diagonals that we can make from one vertex of a n sided polygon is:

The length of a side of square is given as 2x + 3. Which expression represents the perimeter of the square?