Title: Caveat Emptor!
Product review: This book contains multitudinous mistakes, and if an unsuspeting test-taker is not careful, he is sure to learn frequent fatal falsehoods. Great examples are (x+y) = x+2xy+y, and (x-y) = x-y (p. 178). Furthermore, 93, 87, 57, and 51 are not prime, as page 33 asserts. Finally, the book asserts that if x = -1, then x^4 -x^3 -x^2 - x - 1 = 2. This is not the case; it equals 1. This books has caused must grief, bewilderment, and confusion. It is fortunate that it was designed for smart test takers, for dumb test-takers will need all their wit to overcome its errors. Unfortunately, no wit will be left for the test.
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