Practice problem
Express 7x2−71−x2\frac{7x^2-7}{1-x^2}1−x27x2−7 in its simplest form, assuming x2≠1x^2\neq 1x2=1.
000
−7-7−7
7(x−1)x+1\frac{7(x-1)}{x+1}x+17(x−1)
7(x+1)(x−1)x2+1\frac{7(x+1)(x-1)}{x^2+1}x2+17(x+1)(x−1)
Type a concept, like “slope” or “photosynthesis”.
