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B
ex(x2−4x)+c
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C
ex(x2+4x−5)+c
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D
ex(x2−4x+5)+c
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Solution
The correct option is Dex(x2−4x+5)+c ∫ex(x−1)2dx ∫ex(x2−2x+1)dx x2−2x+1=(ax2+bx+c)+(2ax+b) a=1;b+2=−2;b=−4,c+b=1,c=5 ∫ex(x2−2x+1)dx=∫ex[(x2−4x+5)+(2x−4)]dx It is in the form of ∫ex[f(x)+f1(x)]dx=exf(x)+c =ex(x2−4x+5)+c