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Question

Find the maximum value of the expression 1x2+5x+10


A
152
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B
1
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C
415
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D
13
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Solution

The correct option is B 415
For the given expression to have the maximum value, the denominator should be minimized. (Since the function in the denominator has imaginary roots and is always positive). x2 + 5x + 10 will be minimized at x = -2.5 and its minimum values at x = -2.5 is 3.75.
Hence required answer = =13.75=415

Quantitative Aptitude

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