Practice problem
What is (9i−7)−(3i−4)(9i - 7) - (3i - 4)(9i−7)−(3i−4)?
6i−36i - 36i−3
6i−116i - 116i−11
12i−1112i - 1112i−11
12i−312i - 312i−3
Type a concept, like “slope” or “photosynthesis”.
