If and are the roots of the equation x^2-6 x+8=0 , then what is the value of (2 +2 ) ?

Step-by-step solution

+ =6 aligned & =8 ( + ) & = + 1- & = 6 1-8 = 6 -7 (2 +2 ) & = 2( + ) & = 1- ^2( + ) 1+ ^2( + ) & = 1- 36 49 1+ 36 49 & = 13 85 aligned