Answers

2015-06-09T20:21:18+05:30
(c) is not a quadratic equation as

(x+2)(x-1) = x2 - 2x - 3
or, x2 -x - 1 = x2 - 2x - 3
or, 2x - 3 = -x - 1

As degree of polynomial is less than 2, it is not a quadratic equation
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