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the expression 2x ^2 + 4x +7 has mi...

the expression ` 2x ^2 + 4x +7` has minimum value m at `x= alpha ` . The ordered pair `( alpha , m) ` is

A

`(1,5)`

B

`(1,-5)`

C

`(-1,-5)`

D

`(-1,5)`

Text Solution

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The correct Answer is:
D
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