Question 990578
If {{{s=a^2}}},
Then,The above equation is aquadratic equation not linear equation.The reason is that quadratic equation is a degree two equation(i,e,the variable is in the power of two) but linear equation is always a degree one equation.(i.e,the variable(s) is in the power of one.
If it is in degree three,it is called cubic equation.
Note that all these belong to a class called polynomial.
HOPE THIS HELPS?