Question

Which of the following is not a quadratic equation
a)x2-2x=(-2)(3-x)
b)x3-4x2-x+1=(x-2)3
c)x2+3x+1=(x-2)2
d)x* +1 =x(1-x)​

Answer 1

Step-by-step explanation:

x²-2x=(-2)3-(-2)x

x²-2x=-6+2x

x²-2x-2x+6=0

x²-4x+6=0

hence it is quadratic equation