Square roots - page 2

:confused: Can someone tell me how to figure a square root? I need to be able to do this for the nursing entrance test. My math skills are horrible, & I can't use a calculator. Thanks, ... Read More

  1. by   christinemj
    The problem is solved this way....

    x2 - x - 6=0
    (x-3)(x+2)=0 (distributive property)

    x-3=0 --> x-3+3 = 0+3 --> x=3 (add 3 to both sides)

    x+2=0 --> x+2-2 = 0-2 --> x=-2 (subtract 2 from both sides)

    And you would choose answer choice A

    Christine




    Is there anyone who can tell me how to figure this? It is a sample question on my entrance test.... I copied & pasted it so it is written just like on the test.

    If x2 - x - 6 = 0 then x is:
    a. -2 or 3
    b. -1 or 6
    c. 1 or -6
    d. 2 or -3

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