1.

If the expression `6x^(2)+13x+k` is divisible by `2x + 3`. Then which of the following is the factor of the expression ?A. `3x+1`B. `3x+4`C. `3x+2`D. `3x+5`

Answer» Correct Answer - C
Let `f(x)=6x^(2)+13x+k`
Given `2x+3` is a factor of `f(x)`
by factor theorem,
`f(-(3)/(2))=0`
`rArr6(-(3)/(2))^(2)+13(-(3)/(2))+k=0`
`rArr(27)/(2)-(39)/(2)+k=0rArrk=6`
`:.f(x)=6x^(2)+13x+6`
`=(2x+3)(3x+2)`
`:.` The other factor is `3x+2`.


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