Question

if X + Y is equal to 8 then x minus Y is equal to 2 find the value of 2 X square + 2 y square.​

Answer 1

Answer:

X+Y=8............ 1

X-Y=2.............2

multiply eq 1 and 2

Xsquare+Ysquare=16

both sides multiply with 2

2Xsquare+2Ysquare=32