The sum and the product of two numbers are 16 and 64 respectively, the difference of the number is?	Choose the most appropriate option.
A) 0 B) 6 C) 7 D) 8 E) 2
Explanation:   x + y = 16   xy = 64   (x- y)2 = (x + y)2 - 4xy   (x- y)2 = 256- 256 =&gt; (x - y) = 0   0nswer: 0
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The sum and the product of two numbers are 16 and 64 respectively, the difference of the number is?