What substitution should be used to rewrite 4x4 – 21x2 + 20 = 0 as a quadratic equation?
u = x...
Mathematics, 12.03.2020 21:51 hopeeast8
What substitution should be used to rewrite 4x4 – 21x2 + 20 = 0 as a quadratic equation?
u = x2
u = 2x2
u = x4
u = 4x4
Answers: 2
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