What substitution should be used to rewrite 4×4 – 21×2 + 20 = 0 as a quadratic equation? u = x2 u = 2×2 u = x4 u = 4

Question

What substitution should be used to rewrite 4×4 – 21×2 + 20 = 0 as a quadratic equation?
u = x2
u = 2×2
u = x4
u = 4×4

in progress 0
Parker 15 hours 2021-09-15T06:17:48+00:00 2 Answers 0

Answers ( )

    0
    2021-09-15T06:19:09+00:00

    the answer is u=x2 to the question

    0
    2021-09-15T06:19:17+00:00

    Answer:

    the first option

    Step-by-step explanation:

    just took it

Leave an answer

45:7+7-4:2-5:5*4+35:2 =? ( )