On Apr 16, 6:05 am, "Greg Neill" <gneill...@[EMAIL PROTECTED]
> wrote:
> <henrysun...@[EMAIL PROTECTED]
> wrote in message
>
> news:3cd210d8-39e9-4724-be8c-225c84f7783b@[EMAIL PROTECTED]
>
> > In the book, Algebra Demystified," the author presents this problem as
> > the part of the final book review (problem #57):
>
> > 4x(x-3) - 5(3x-6) = (2x - 3)2
>
> > The author's answer is 7/5, which is correct.
>
> > However, when I solve the problem I get something entirely different,
> > namely:
>
> > (4x2 - 12x) - (15x - 30) = 4x2 - 12x + 9
> > 4x2 - 27x + 30 = 4x2 - 12x + 9
> > -27x + 30 = -12x + 9
> > 21 = 25x
>
> 27x - 12x = 15x
Thanks for the help.
It is humbling to realize I spent 15 minutes on this stupid problem
and made the same mistake every time.
Henrysun909
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