Quadratic Equation

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by GMATGuruNY » Mon May 16, 2011 1:20 am
Strongt wrote:a-b = (a^2-b^2)/(b^2-a^2) and b^2-a^2 not equal 0, then b-a=

OA is 1

Source: Kaplan
a-b = (a^2-b^2)/(b^2-a^2)
Multiplying each side by -1, we get:
b-a = (b^2-a^2)/(b^2-a^2)
b-a = 1.
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by Strongt » Mon May 16, 2011 2:04 am
now that makes sense :)...Thanks Mitch