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The domain of the equation y = 3x/(x^2 - 5x - 4) is the set of all real numbers with the exception of the values x = A and x = B. What is A + B?

 Jul 22, 2021
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In order for the domain to not work, the denominator.

 

x2-5x-4=0

\(x = {5 \pm \sqrt{25+16} \over 2}\)

A = (5+√41)/2

B = (5-√41/2)

A+B = (5+√41+5-√41)/2

A+B = 5

angelangelangel

 Jul 22, 2021

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