Question

x+y=5 এবং x-y = 1 হলে 8xy (x2 + y2) এর মান কত?​

Answer 1

Step-by-step explanation:

x+y=5....i

x-y=1......ii

Adding i and ii

x+y+x-y=5+1

orx=3

from i

x+y=5

3+y=5

or y= 2

So, 8xy(x2+y2)

=8*3*2(3*2+2*2)

=480