Which of the following is not a quadratic equation ?
(a) 2(x-1)2 =4x2 - 2x + 1
(b) 2x - x2 =x2 + 5
(c) (√2x +√3)2 + x2= 3x2 - 5x
(d) (x2 + 2x)2=x4+3+4x3
Solution
