You can put this solution on YOUR website! Expand the binomial, (x^2+1)^4
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4C4*(x^2)^4 + 4C3*(x^2)^3 + 4C2*(x^2)^2 + 4C1*(x^2) + 4C0(x^2)^0
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= x^8 + 4x^6 + 6x^4 + 4x^2 + 1
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Cheers,
Stan H.