Key to Practice Midterm I

Problem 1

A.  (2x - 5)(3x + 2)

B.  (x - 5)(x + 6)

C.  2xy(2x - 3y)(2x + 3y)

D.  x²(3x + 4)(2x - 1)

E.  (x + 2y)²

Problem 2

A.  (4x + 1)/x²

B.  (x² + xy + y² )/(x² - xy + y²)

Problem 3

A.  x = 0, x = 1, or x = -1

B.  x = 2/3 or x = 5/2

Problem 4

A.  -2/3 < x < 2

B.  All Real Numbers

Problem 5

The height is 10 feet.