Question

if x+y is 10 l,xy is 21 then find 2(x²+y²)​

Answer 1

Answer:116

Step-by-step explanation: You can find x and y values easily by thinking without writing two equations and solving,

x will be 7 and y will be 3.

So. 2(7²+3²)= 2(49+9)=2*58=116.