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17-09-2017
Mathematics

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How do I solve by factoring x^4-50x^2+49=0

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Аноним Аноним

17-09-2017

(X^2-1)(x^2-49)
So for the first one take
X^2=1
X=1
The second
X^2=49
X=7
X=7,1

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Аноним Аноним

17-09-2017

[tex](x^2-49)(x^2-1) = (x-7)(x+7)(x-1)(x+1) = 0, so x = 7, x = -7, x = 1, x = -1. [/tex]

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