Science and Nature Quiz for 18 March 2009
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Question 1: Which of these equations accurately represents the relationship between the square of a number and the product of one less and one greater than that number?
A
B
x2 = (x-1)(x+1)
(x2)-1 = (x-1)(x+1)
C
(x2)+1 = (x-1)(x+1)
D
x2 = (x-1)(x+1)-1