Practice problem
Which of the following are equivalent to (23×4)×23(23\times 4) \times 23(23×4)×23?
(23+4)×23(23+4) \times 23(23+4)×23
23×(4×23)23\times (4 \times 23)23×(4×23)
(23×23)×4(23\times 23) \times 4(23×23)×4
23×(23×4)23\times (23 \times 4)23×(23×4)
Type a concept, like “slope” or “photosynthesis”.
