Question

Is x^2-y^2=0 is a quadratic equation and prove

Answer 1

every equation is quadratic equation when equation in the form of
ax^2+bx+c=0

we have given
x^2-y^2=0
dividing both side by y^2
x^2/y^2-y^2/y^2=0/y^2

(x/y)^2-1=0

let (x/y)=m

now ,
m^2-1=0

1.m^2+0.m-1=0
we see 1.m^2+0.m-1=0 just like quadratic equation hence x^2-y^2=0 is a quadratic equation .