Given that , , and are three consecutive positive integers, and , . Find the value of .
Solution
Analysis: Since and , by using the difference of squares formula, we get . Given that , , and are three consecutive positive integers, we have (1). Therefore, we can calculate (2). From (1) and (2), we can solve for , and thus find the value of .
Let's solve it step by step:
1. From the given, we know and . Using the difference of squares, we have:
2. Since , , and are consecutive integers, we have:
3. From the equation above, we can find:
4. Solving equations (1) and (2) simultaneously, we can find the values of and , and thus determine as the integer between and .
Therefore, the value of is .
Want a route through all this instead of an archive? The track
puts 2,000 problems in a working order, from AMC 10 level to the IMO shortlist.