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

What substitution should be used to rewrite 4x^4-21x^2+20=0 as a quadratic equation-example-1
User Adeleke
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1 Answer

7 votes

Answer:

u = x^2

Explanation:

User Emerson Cod
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