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For which rational expression is –2 an excluded value of x? a) x-3/x^2-4 b) x-3/x^2+4 c) x^2-4/x-3 d) x^2+4/x-3

Chelsea Hayes

in Mathematics

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Carlton Burgess on March 5, 2018

Look at the denomenator and see which of them convert to 0-2 when you are subed to xcause you can't divide by 0. 4-4=0, this has -2 excludedB. 4+4=8, this is fine, -2 is not excludedC. -2-3=-5, it is found, -2 is not excludedD. same as aboveanswer is A


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