Question

which one of the following are quadratic equation
1. 2 x ^2 - 7 x = 0
2. x + 3 / x = 2 x ^2
3. x^2+ 1 /x^2 =x^ 2
4. x ^2 + 2√x-3=0
5. 3 x ^2 - 4 x + 2=2x^2-2x+4​

Answer 1

Answer:

I don't know about it I am really sorry for this

Step-by-step explanation:

my dear friend