Answer:
4891
Step-by-step explanation:
73 can be written as (70 + 3), and 67 can be written as (70 - 3) which means that 73 × 67 is the same as (70 + 3)(70 - 3)
The next step is to use FOIL and expand the brackets:
- First: 70 × 70 = 4900
- Outside: 70 × -3 = -210
- Inside: 3 × 70 = 210
- Last: 3 × -3 = -9
(70 + 3)(70 - 3) = 4900 + -210 + 210 + -9
This can be simplified to 4891.
Hope this helps!
