Practice problem
Simplify the following expression when t≠1t \neq 1t=1 and t≠−1:t \neq -1:t=−1: t2−1t−1÷t+1t−1\frac{t^{2}-1}{t-1} \div \frac{t+1}{t-1}t−1t2−1÷t−1t+1
t2−1t+1\frac{t^{2}-1}{t+1}t+1t2−1
t−1t-1t−1
ttt
t2+2t+1t−1\frac{t^{2}+2t+1}{t-1}t−1t2+2t+1
Type a concept, like “slope” or “photosynthesis”.
