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Question

Find the maximum value of y which satisfy the inequations y2+5y+40 and y22y150

A
4
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B
3
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C
3
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D
4
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Solution

The correct option is A 3
y2+5y+40y2+4y+y+40(y+1)(y+4)0y(4,1)&y22y150y25y+3y150(y+3)(y5)0y(,3)(5,)
Maximum value of y=3

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