Question 706224
    log2 (y+2)-log2(y-2)=1
    log2 (y+2)/(y-2)=1
    (y+2)/(y-2)=2^1
    (y+2)/(y-2)=2
    (y+2)=2(y-2)
    y+2=2y-4
    2=y-4
    6=y