Mathematical Error 1 = - 1?

in #steempress • 5 years ago

In algebra class, an error in square root product

The step 2 is not equivalent to step 3.

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1=-1.png

So clearly we’ve got a problem here as we are well aware that 1 is not equal to -1; The problem arose in step 3. The property that I used has the restriction that a and b can’t both be negative. It is okay if one or the other is negative, but they can’t BOTH be negative!

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5 years ago in #steempress by
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     5 years ago 

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