Fill in the blanks to make the statements true.

x + y + z is an expression which is neither monomial nor ________ .

Fill in the blanks to make the statements true.

The expression 13 + 90 is a _____ .

Fill in the blanks to make the statements true.

The speed of car is 55 km/hrs. The distance covered in y hours is ______.

Fill in the blanks to make the statements true.

If (x²y + y² + 3) is subtracted from (3x²y + 2y² + 5), then coefficient of y in the result is _______ .

Fill in the blanks to make the statements true.

– a – b – c is same as – a – (________).