What substitution should be used to rewrite 4x4 – 21x2 + 20 = 0 as a quadratic equation?

asked Aug 11, 2021 47.1k views

5 votes

by Coxer

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3 votes

Explanation:

= 32+20-21

= 52-21

= 31

5.3k points

6 votes

Answer:

u = x^2

Explanation:

on edg 2020

Bamerza answered Aug 17, 2021

6.4k points

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