Sum of two products is product
Hello dear Kabu. Thank you for being among my best students. Here is another puzzle I made recently. Show why, for all numbers, A, B, C, that (A-B)(A+B) + (B-C)(B+C) = (A-C)(A+C). Sign in to see full entry.
Mathematics: Sum of two products is product
By Kermit1941 - About Me - E-mail this page - Add to My Favorites - Add to Blog List - See other blogs in Science & Nature
About this Blog
Explaining mathematical topics
Recent Entries
- Number of primes between consecutive squares
- If x+y = x y = 3, then what is x^3 + y^3?
- Examples of Sum of products equal to sum of products
- Quotation about teaching math.
- How to make the sum or difference of two integers to be prime
People
Previous: Two Theorems: - New Entries - Next: Calendar dates