Marco Bromberg
Saturday, August 20, 2011
PSAT Math Question Please Help?
Okay, so since 9 minus (a-b) squared is 5, then (a-b) squared has to equal 4. To get (a-b), you have to take the square root of 4 [(a-b) squared], which is -2 and 2, and since 2 is not an answer, -2 has to be the correct answer, therefore A.
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