simplyfy if quadratic equation or not quadratic equation and arrange into quadratic equation form
25-r2=4x
It would help if you proofread your questions before you posted them.
Online "^" is used to indicate an exponent, e.g., x^2 = x squared.
Do you mean 25-x^2 = 4x
In that case,
x^2 + 4x - 25 = 0