Question

please give this answer correct all three if possible then please write in Notebook and send I will mark the brain listen give my all points to you ​

Answer 1

Answer:

all are not a quadratic

Step-by-step explanation:

1-Q:-x²-6x-4=0 formula:-ax²+bx+c=0

not possible so, the equation is not a quadratic

2-Q:-3x²-7x-2=0

not a quadratic

2-Q:-x³-6x²+2x-1=0 formula:- ax³+bx²+cx+d=0

not a quadratic