Question

Implicit differentiation

Answer 1

\[2(x^2+y^2)^2=25(x^2-y^2)\]

Answer 2

so far, I have:
\[4(x^2+y^2)(2x+2yy') = 25(2x-2yy')\]

Answer 3

ur done

Answer 4

@dan815 the next step is:
\[4(x+yy')(x^2+y^2)=25(x-yy')\]

Answer 5

and I don't know how to get that part.