Add: 9xy - 3yz + 2zx; 2xz + 9xy - 4y and -2xz + 5x + 3xy.

Subtract 6x² – 5y² + 7y – 4 from 8² – 5xy + 9y² + 6x - 4y

Give five examples of expressions containing one variable and five examples of expressions containing two variables.

Classify the coefficient of each term in the expression
x²y² – 10x²y + 5xy² – 20.

Classify the following polynomials as monomials, binomials, trinomials –z + 5, x + y + z, y + z + 100, ab – ac, 17

Construct:

(a) 3 binomials with only x as a variable;

(b) 3 binomials with x and y as variables;

(c) 3 monomials with x and y as variables;

(d) 2 polynomials with 4 or more terms.

write two terms which are like

(i) 7xy (ii) 4mn² (iii) 21.

Identify the terms, their coefficients for each of the following expressions.

Identify the terms, their coefficients for each of the following expressions.
1 + x + x²

Identify the terms, their coefficients for each of the following expressions.