SOLUTION: find and explain what error led to the conclusion that 1=2? true a=b true (a)(b)=(b)(b) true ab=b^2 true ab-a^2=b^2-a^2 true a(b-a)=(b-a)(b

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Question 242234: find and explain what error led to the conclusion that 1=2?
true a=b
true (a)(b)=(b)(b)
true ab=b^2
true ab-a^2=b^2-a^2
true a(b-a)=(b-a)(b+a)
false a(b-a)/(b-a)=(b-a)(b+a)/(b-a) is it undefined?
false a=b+a
false a=a+a
false a=2a
false 1=2
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
find and explain what error led to the conclusion that 1=2?
true a=b
true (a)(b)=(b)(b)
true ab=b^2
true ab-a^2=b^2-a^2
true a(b-a)=(b-a)(b+a)
false a(b-a)/(b-a)=(b-a)(b+a)/(b-a) is it undefined?

Yes that's undefined because the first step is a=b, so a-b=0,
and division by 0 is impossible, so the rest is not valid.

false a=b+a
false a=a+a
false a=2a
false 1=2

Edwin