Mathematics 120 (Precalculus)

Self Test

prepared by:

Joseph Malkevitch
Mathematics Department
York College (CUNY)
Jamaica, NY 11451

Email: malkevitch@york.cuny.edu

web page: http://york.cuny.edu/~malk

The questions below are designed as a self-test to determine if you are making mistakes with regards to some of the basic skills that are the background for precalculus.

1. Perform the indicated operations and simplify:

a. (2/9)(3/8) =

b. 5/28 divided by 55/21 =

c. (7/12) - (7/40) =

2. Multiply or simplify:

a. (x - 8)(x + 4) =

b. (x - 5)(x - 9) =

c. (x - 9y)2 =

d. (x7)(x4) =

3. Perform the indicated operations and/or simplify:

a. (3x/5) - (4x/3) =

b. (3x/7)(14x/9) =

c. 2x/5 divided by 15/x4

d.

e.

f. (-3x3 + 4x2 -9x +5) - (-7x + 3x3 + 2x2 - 11) =