Practice problem
What is (4i+7)−(5i+2)+(3i−7)(4i + 7) - (5i + 2) + (3i - 7)(4i+7)−(5i+2)+(3i−7)?
2i+22i + 22i+2
2i−22i - 22i−2
12i−212i - 212i−2
12i+212i + 212i+2
Type a concept, like “slope” or “photosynthesis”.
