Chapter T, Problem 10ADT

State whether each equation is true or false.

1. (a) (p + q)² = p² + q²
2. (b) $\sqrt{ab}=\sqrt{a}\sqrt{b}$
3. (c) $\sqrt{a^2+b^2}=a+b$
4. (d) $\frac{1+TC}{C}=1+T$
5. (e) $\frac{1}{x-y}=\frac{1}{x}-\frac{1}{y}$
6. (f) $\frac{1/x}{a/x-b/x}=\frac{1}{a-b}$