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What substitution should be used to rewrite 4x4 – 21x2 + 20 = 0 as a quadratic equation? u = x2 u = 2x2 u = x4 u = 4x4
What substitution should be used to rewrite 4x4 – 21x2 + 20 = 0 as a quadratic equation?
u = x2
u = 2x2
u = x4
u = 4x4
Expert Solution
Answer is
u=x2 to the question
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