Question

the value of x + y = 8 and x minus y = 4 then the value of xy is​

Answer 1

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Answer 2

x + y = 8....(1)

x - y = 4....(2)

Adding equation 1 and 2 to eliminate y

So we get,

2x = 12

x = 6

Substituting the value of x in 1

So we get,

6 + y = 8

y = 8 - 6

y = 2

Since,

x = 6

x = 6y = 2