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9 May, 16:42

X2+4x-3/X4-5X2+4 what is the domain of this function

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  1. 9 May, 19:22
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    Domain is the value of x

    the demonimator cannot be zero

    factor the denominator: (x^2-1) (x^2-4) ≠0

    factor again: (x+1) (x-1) (x+2) (x-2) ≠0

    x≠1,-1,2,-2

    the domain is all real number except 1,-1,2,-2
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