Question

if x²+y² : x²- y² =17:8
find x³+y³: x³- y³
show step wise
I'll make you brainlist​

Answer 1

Step-by-step explanation:

$\frac{ {x}^{2} + {y}^{2} }{ {x}^{2} - {y}^{2} } = \frac{17}{8}$

now cross multiply them,

$8( {x}^{2} + {y}^{2} ) = 17( {x}^{2} - {y}^{2} )$

$8 {x}^{2} + 8 {y}^{2} = 17 {x}^{2} - 17 {y}^{2}$

$9 {x}^{2} - 25 {y}^{2} = 0$

hope this helps you