a+b = -3 ,ab = 2(a+b)² = 9a²+b²+2ab = 9a²+b²+2*2 = 9a²+b² = 5(a²+b²)/(ab) = 5/2a/b + b/a = 5/2a/b + 2 + b/a = 5/2 + 2{ √(a/b) + √(b/a) }² = 9/2√(a/...