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Questions  

Which of the following values of x does not satisfy 5x+1(x+1)2<1?

a
x<0
b
x>3
c
x>2
d
R

detailed solution

Correct option is B

5x+1(x+1)2−1<0⇒ 5x+1−(x+1)2(x+1)2<0⇒ −x2+3x(x+1)2<0⇒ x(x−3)(x+1)2>0⇒ x<0 or x>3,x≠−1

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