Question

x+y=6 and x-y=4 find xy

Answer 1

Answer:

5 = xy

Step-by-step explanation:

(x+y)^2 = (x-y)^2 + 4xy

(6)^2 = (4)^2 + 4xy

36 - 16 = 4xy

20/4 = xy

5 = xy

Hope it helps yo mate

:)

Answer 2

Answer:

xy = 5

Step-by-step explanation:

x+y=6

x-y=4

By using elimination method,

2x = 10

x= 5

x+y=6

put the value of x in this equation

5+y=6

y= 1

Now we have to find the value of xy

xy = 5×1

xy = 5