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If x^(2)+2ax+10 -3a gt 0 for all x in R,...

If `x^(2)+2ax+10 -3a gt 0` for all `x in R`, then

A

`-5 lt a lt 2`

B

`a lt -5`

C

`a gt5`

D

`2 lt a lt 5`

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The correct Answer is:
A
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