Practice problem
Simplify x2+x−42x2−x−56 ⋅x2+x−72x2+12x+27\frac{x^2+x-42}{x^2-x-56}\ \cdot \frac{x^2+x-72}{x^2+12x+27}x2−x−56x2+x−42 ⋅x2+12x+27x2+x−72 when xxx is not an integer.
x+1x+7\frac{x+1}{x+7}x+7x+1
x−8x−6\frac{x-8}{x-6}x−6x−8
x−6x+3\frac{x-6}{x+3}x+3x−6
x+4x−5\frac{x+4}{x-5}x−5x+4
Type a concept, like “slope” or “photosynthesis”.
