A-17. Simplify each algebraic expression below, if possible. If it is not possible to simplify the
expression, explain why not.
a. 3y + 2y + y² + 5+ y
b. 3y² + 2xy + 1 + 3x + y + 2x²
A-18. Evaluate the expressions below for the given values.
a. 4d +3 if d =-1
b. x² + y² if x = 7 and y = 5
