High School Math

MISSION STATEMENT: To encourage and promote a greater use of the internet and computer technology in the math classroom. For educators, students, parents and homeschoolers.

Wednesday, January 19, 2005

What's Wrong?

Let a = b
Multiply by a a.a = a.b
Subtract b.b a.a - b.b = a.b - b.b
Factor (a+b)(a-b) = b(a-b)
Divide by (a-b) a+b = b
Now since a=b 2b = b
Which means that 2 = 1

What is wrong with this solution?

Click     www.TheMathWebSite.com     and put a weekly
puzzle, amusement, enrichment or challenge question
like this one on your school's website!