Find all zeros of the polynomial \( 2 x^{4}+7 x^{3}-19 x^{2}-14 x+3...

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Find all zeros of the polynomial \( 2 x^{4}+7 x^{3}-19 x^{2}-14 x+30 \), if two of its zeros are
(W) \( \sqrt{2} \) and \( -\sqrt{2} \).
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