Discussion
The difference between the squares of two numbers is 256 and their sum is 32. The difference between the numbers is:
Answer: A
\[ a^{2} - b^{2} = (a+b)(a-b) \]
\[ 256 = 32(a - b) \quad\Longrightarrow\quad a - b = 8 \]
The numbers are 20 and 12.
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