Find the number of terms in following algebraic expressions
`2xy^(2), xy^(3) - 3x, 4xy + 6y - 2, 7x^(2) + x `

Find the number of terms in following algebraic expressions. 5xy^2 , 5xy^3 -9x, 3xy + 4y - 8, 9x^2 +2x+pq+q.

Find the factors of following : 2xy(x+y)

Find the like terms in the following 9x^(2)y, 5x, 7y^(2), - 3x^(2), - 5x, 9xy, 11y^(2) .

Factorise the following expression : (x + y)^2 - 4xy .

The arrangement of the following in ascending order of angle to eliminate xy term in the following equations (A) 2x^(2) + 5xy + 2y^(2) + 5x + 7y + 1= 0 (B) 2x^(2) - sqrt(3) xy + 3y^(2) = 9 (C) 9x^(2) + 2 sqrt(3) xy + 5y^(2) = 10

Find the product of the following monomials x^(4)y, x^(3)y, xy^(2), x^(3)

Find the like terms in the following: ax^2 y, 2x, 5y^2 , - 9x^2 ,-6x, 7xy, 18y^2 .

Factorise the following expression - (x - y)^(2) +4xy (Hint : first expand (x -y)^(2) )

Find the product of the following monomials: xy, x^2 y, xy, x

Find the angle between the lines represented by 2x^(2) + xy- 6y ^(2)+ 7y - 2 = 0.