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B
√3x2−5x+6+c
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C
12√3x2−5x+6+c
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D
13√3x2−5x+6+c
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Solution
The correct option is D√3x2−5x+6+c Consider, I=∫(6x−5)dx2√3x2−5x+6 N(x)=6x−5 D(x)=3x2−5x+6 N(x)=D′(x) So, 12∫N(x)√D(x).dx=12∫D1(x).dx√D(x) =12∫d(D(x))√D(x) =12×2√D(x)+c =√D(x)+c D(x)=3x2−5x+6 So, I=√3x2−5x+6+c Hence, ∫(6x−5)2√3x2−5x+6.dx=√3x2−5x+6+c