A notation # is defined as \(a\#b=4a^2+4b^2+8ab\) for all non-negative integers. What is the value of \((x+y)+6\) when \(x\#y = 144\)?
Explanation: বলা আছে \(a\#b=4a^2+4b^2+8ab\)। তাহলে \(x\#y=4x^2+4y^2+8xy\)। এখন \(4x^2+4y^2+8xy=144 \Rightarrow x^2+y^2+2xy=36 \Rightarrow (x+y)^2=36 \Rightarrow x+y=6\)। সুতরাং , \(x+y+6=6+6=12\)।