Question

If x+y=5, x³+y³=35, find the value of x-y​

Answer 1

Answer:

+1

Step-by-step explanation:

(x+y)³=x³+y³+3xy(x+y)

or 5³=35+3xy(5)

or 125−35=15xy

or xy=90/15=6

Now, (x−y)²=(x+y)²−4xy

=5²−4×6

=25−24=1

∴x−y=_/￣1=±1