Mathematics, 04.07.2019 21:30, bellabarber204

What substitution should be used to rewrite 4x^4-21x^2+20=0 as a quadratic equation

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Solve x+3y=6 and 4x-6y=6 by elimination . show work !

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What substitution should be used to rewrite 4x^4-21x^2+20=0 as a quadratic equation...

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