Add: 9xy - 3yz + 2zx; 2xz + 9xy - 4y and -2xz + 5x + 3xy.
We write the expressions in separate rows, keeping like terms in the same column:
9xy -3yz + 2zx
+ 9xy + 2zx - 4y
+ 3xy - 2 zx + 5x
____________________________
21xy -3yz + 2zx -4y +5x
In the above example, -4y and 5x are carried over as they are, because they have no like terms. II. xz is same as zx.
Give five examples of expressions containing one variable and five examples of expressions containing two variables.
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.
Identify the terms, their coefficients for each of the following expressions.
1 + x + x2