Question

m^2+5m=13+m^2 is quadratic equation​

Answer 1

I think your question must be this :

Is

${m}^{2} + 5m = 13 + {m}^{2}$

a quadratic expression or not ?

Answer: No

Explaination :

m^2+5m =13+m^2

--> m^2 - m^2 + 5m - 13 = 0 (Taking all terms to the LHS)

--> 5m - 13 = 0 (m = 13/5)

Since the highest power of the variable is 1, the answer to your question is No, the given equation is not a quadratic expression.

Hope it helped :)