Question

If X+Y is equal to 7 andXY is equal to 10 find X-Y

Answer 1

Answer:

Xy=10 only when

x=2 and y=5

hence,

5+2=7

5-2=3

Answer 2

Answer:

By trial and error method we get x=5 &. y=2 or x=2 & y=5

The x-y=3 or -3

Step-by-step explanation:

Because 2+5=5+2=7

& 2×5=5×2=10

So the solution are 5 and 2

And x-y = 5-2=3

Or x-y=2-3=-3