the square root of (n:2 + 1)

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1 total messages Started by B7D Tue, 12 Jan 1993 20:26

#485

Author: B7D
Date: Tue, 12 Jan 1993 20:26

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A week ago my daughter brought back a math test sheet which is one of a series
of math tests designed by Pennsylvania State for 9-12 graders. The very first
question in this test is: find integer n so that the square root of (n:2 + 1)
 is also an integer.
   My question is not what the answer is. I would like to know what
 a teacher expects a student write down for the question. In other word,
 what math knowledge or ability the teacher likes the student to show
 through the test.
   Duane

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