qqp question1: Can you determine from a chemical compound’s formula if it's thermostable or thermolabile? question2: "My book says this: ""[math]\displaystyle(3^2 - 8)^{\frac{1}{2}} = 3 - 4 \rightarrow 1 = -1 \rightarrow [/math]false"", but [math]1^{\frac{1}{2}}[/math] can also be equal to [math]-1[/math], because [math]-1[/math] squared is [math]1[/math], isn't it?"