1.

The number of solutions of the equation log_((2x + 3)) ( 6x^(2) + 23 x + 21) + log_((3x + 7)) (4x^(2) + 12 x + 9) = 4is

Answer»

(-8,5)
`-1/4` only
`-1,-1/4`
`-1/4,-2`

ANSWER :B


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