Question

(ii) Which is not a quadratic equation given below
(a) 2x-3x2 = 3x2+5
(b) (2x+3)2 = 2(x2–5)
(c)(3x+2)2 = 3x2-7
(d) (x-2)2 = 5x2+2x-3​

Answer 1

option b is not a quadratic equation

(2x+3)^2=2(x^2-5)

2x^2+9=2x^2-10

2x^2-2x^2+9+10

=19

hence option b is correct