Question

which of the following is a quadratic equation..?​

Answer 1

(K+1)x² + (3/2)x = 7

put k = -1

and we will get something like this

0 + (3/2)x = 7

This is not a quadratic equation

Answer 2

Answer:

(k+1)$x^{2}$ + 3/2$x$-7=0

       = (-1+1)$x^{2}$+3/2$x$-7=0

       = 0$x^{2}$+3/2$x$-7

       =3/2$x$-7 is not a quadratic equation when k =-1

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