Bunuel wrote:
\((20^2 - 18^2) - (19^2 - 17^2)\)?
A. 4
B. 36
C. 38
D. 76
E. 224
\((20^2 - 18^2) - (19^2 - 17^2)\)
\((20 - 18)(20+18) - (19 - 17)(19+17)\)
\((2)(38) - (2)(36)\)
\(2(38 - 36)\)
\(2(2) = 4\)
Answer (A)...
...
\((20^2 - 18^2) - (19^2 - 17^2)\)?
A. 4
B. 36
C. 38
D. 76
E. 224
\((20^2 - 18^2) - (19^2 - 17^2)\)
\((20 - 18)(20+18) - (19 - 17)(19+17)\)
\((2)(38) - (2)(36)\)
\(2(38 - 36)\)
\(2(2) = 4\)
Answer (A)...
...
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