Which of the numbers -3 -2 -1 0 1 2 3 are the roots of the equation x^4-5x^2+4 and x^2 x+1 + x+4 =4 DESCRIBE?

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Which of the numbers -3 -2 -1 0 1 2 3 are the roots of the equation x^4-5x^2+4 and x^2 x+1 + x+4 =4 DESCRIBE? and got a better answer

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Response from 0[+++++]
Put each option in place of x and get an answer of 0 for the second

 

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