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-Find Two Numbers Whose Sum Is 56 and Whose xx

Question 11

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-Find two numbers whose sum is 56 and whose product is as large as possible. [Hint: Let xx and 56−x56 - x be the two numbers. Their product can be described by the function f(x) =x(56−x) f ( x ) = x ( 56 - x ) .]


A) 28 and 84
B) 128\frac { 1 } { 28 } and 1328\frac { 13 } { 28 }
C) 28 and 28
D) 27 and 29

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