1.   Factor x2 – 16.
    A. (x + 4)(x + 4) B. (x + 4)(x – 4)
    C. (x + 2)(x – 8) D. (x – 4)(x – 4)
    Hint

  2.   Factor 7xy2 - 28x3
    A. 7x2y2(1 + x) B. 7x(y + 2x)(y - 2x)
    C. prime D. (7xy + x)(y – 28x2)
    Hint

  3.   Factor 16b4 – 36b2.
    A. 2b2(2b – 3)(2b + 3) B. 2b2(4b – 3)(4b + 3)
    C. 4b2(2b – 3)(2b + 3) D. 4b2(4b – 3)(4b + 3)
    Hint

  4.   Solve 27x3 = 147x.
    A. B.
    C. D.
    Hint

  5.   Suppose that we have a 3 ft. × 3 ft. piece of paper, and we cut out a square piece so that the area of the remaining piece is 5 feet. What is the length of a side of the square?
    A. 2 ft. B.
    C. D. 4 ft.
    Hint



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