by "Greg Neill" <gneillREM@[EMAIL PROTECTED]
>
Apr 16, 2008 at 09:05 AM
<henrysun909@[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):
>=20
> 4x(x-3) - 5(3x-6) =3D (2x - 3)2
>=20
> The author's answer is 7/5, which is correct.
>=20
> However, when I solve the problem I get something entirely different,
> namely:
>=20
> (4x2 - 12x) - (15x - 30) =3D 4x2 - 12x + 9
> 4x2 - 27x + 30 =3D 4x2 - 12x + 9
> -27x + 30 =3D -12x + 9
> 21 =3D 25x
27x - 12x =3D 15x
