Question

if X+y= 4 and x^2 + y^2=12 then find the value of xy​

Answer 1

Answer:

Step-by-step(x+y)2=4 (x+y)2=x2+2xy+y2. (x+y)2=x2+y2+2xy. using the values given: (x+y)2=12+2×(−4). (x+y)2=12−8=4. explanation: