Bunuel wrote:
What is the value of 3x^2 + 2x – 1 ?
(1) (x + 1)(3x + 1) = 0
(2) (x + 1)^2 = 0
Stmnt 1 ==> (x+1)(3x+1)=0 implies x=-1 or x=-1/3 . 2 values of x gives 2 different ans. soo insufficient
Stmnt2 ==> x+1^2=0 implies x=-1 . So 3-2-1=0 . Sufficient.
Ans:B
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