Question

find the value of (x power 2)+(y power 2), if xy=-15and x-y=6​

Answer 1

Answer:

6

Step-by-step explanation:

(a²+b²) =(a-b)²+2ab

(x²+y²)=(x-y) ²+2xy

putting the value of x-y=6, x-y= -15

=6²+2(-15)

=36-30

=6