Problem 2.1: How many terms do the following expressions have?
a) 17x² + 4xy + 2y
b) 2y + 4 - 6y + x²
c) 8y⁶
d) 3xyz + 4yz + 2xz + z² - xz
[Solution]

Problem 2.2: In the expression 5x + 3x² - xy - 5z + z³, what is the coefficient of...
a) x ?
b) z ?
c) z³ ?
d) x² ?
e) xy ?
f) z² ?
[Solution]

Problem 2.3: What is the constant in the expression 4x² + 5 + x? [Solution]

Problem 2.4: Simplify 5x² + x³ -4x² + x + 6 - 4 + x² - 3x by combining like terms. [Solution]

Problem 2.5: Simplify 7y + 14xy - 3y - 4y - 6x² - 2xy by combining like terms. [Solution]

Problem 2.6: Simplify 14 +

x + 8x² -6 - x + 5x² by combining like terms. [Solution]