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?

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