1 ---> Taking (x^2+3)^2 common, we get the equation as : (x^2+3)^2 = 28/10. We cannot get value of x. Hence not sufficient.
2 ---> Solving, we get x=1 or x=-2. Hence, not sufficient.
(1) + (2) ---> Values from statement 2 does not satisfy 1. Hence, we cannot find value of x. Hence E.
2 ---> Solving, we get x=1 or x=-2. Hence, not sufficient.
(1) + (2) ---> Values from statement 2 does not satisfy 1. Hence, we cannot find value of x. Hence E.







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