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to {2 x^2 (x + 3) – 2 x – 6}/ (x^2 + 2 x – 3) for all

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by sanju09 » Tue Sep 14, 2010 5:55 am
Which of the following is equivalent to {2 x^2 (x + 3) - 2 x - 6}/ (x^2 + 2 x - 3) for all values of x for which both expressions are defined?
(A) 2 x^2 - 2
(B) 2 x + 2
(C) x + 1
(D) 2 x + 6
(E) x - 1



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Source: — Problem Solving |

by selango » Tue Sep 14, 2010 6:01 am
{2 x^2 (x + 3) - 2 x - 6}/ (x^2 + 2 x - 3)

[(2x^2-2)(x+3)]/[(x+3)(x-1)]

=2(x+1) or 2x+2

Pick B
--Anand--
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by Rahul@gurome » Tue Sep 14, 2010 6:08 am
Please see the attachment.

The correct answer is [spoiler](B)[/spoiler].
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