Question

please solve

(√x²+y²)(√x²+y²)
its urgent
the root is both on x and y

Answer 1

$Given : ( \sqrt{x^2 + y^2} )( \sqrt{x^2 - y^2)}$

$= \ \textgreater \ \sqrt{(x^2 + y^2)(x^2 - y^2)}$

It is in the form of (a + b)(a - b) = a^2 - b^2

$= \ \textgreater \ \sqrt{(x^2)^2 - (y^2)^2}$

$= \ \textgreater \ \sqrt{x^4 - y^4}$


Hope this helps!