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For what values of m are the roots of th...

For what values of m are the roots of the equation `mx^(2) + (m + 3) x + 4 = 0` are equal?

A

1 or 5

B

`-1 or 2`

C

`8 or 1`

D

`9 or 1`

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The correct Answer is:
D
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