Algebra 1 (Reiny)

1. ((d + 2)/(d + 8)) = ((-6)/(d + 8))

A: ?

2. 4/n^2 = 7/n + 2

A: n = -4 or n = 1/2?

3. 2/t + 4/3t = 4/t + 2

A: t = 10?

4. ((x -6)/(x^2-6)) = ((-4)/(x-4))

A: ?

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  1. #1 no solution
    #2 ok
    #3 ok
    but I had to try two different ways of inserting parentheses before I got your answer. Grrr. The spacing in "t + 2" was especially deceptive.
    #4 x = 0 or 2
    This time, overkill. Use parens as needed, but only as many as it takes to avoid ambiguity. I'd have said
    (x -6)/(x^2-6) = (-4)/(x-4)

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    posted by Steve

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