Question

If x+y=12 and xy=9,find the value of (x²+y²).



Answer quickly!!!!!! ​

Answer 1

Answer:

Step-by-step explanation:

x+y=12 ,

(x+y)²=12² ( squaring both side ) ,

x²+y²+2xy=144 ,

x²+y²+2(14)=144 (xy=14) ,

x²+y²=144-28 ,

x²+y²=116.

HOPE IT HELPS YOU.

Answer 2

Answer:

X^2+Y^2=(x+y)^2+2xy

12^2+2(9)

144+18

162

Step-by-step explanation: