Decide which of the following are quadratic equations :
`m^(3)+3m^(2)-2=3m^(3)`

Explanation

`m^(3)+3m^(2)-2=3m^(3)`
`:.m^(2)-3m^(3)+3m^(2)-2=0`
`:.-2m^(3)+3m^(2)-2=0`
In this equation the, highest index of the variable m is 3 and not 2.
`:.` the given equation is not equadratic equation.