justin5647
21.07.2020 •
Mathematics
In order to make the expression below equivalent to 1/2x+6, which additional operation should be included in the expression?
use the drop-down menu to select the operation.
5/4x+6
A: -x
B: -2x
C: -3x/4
D: +3x/4
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Ответ:
A, 1,2
Step-by-step explanation:
we translate it first into language of math
we use n for the number
n² = 3n - 2
then, do some algebra things
n² - 3n + 2 = 0
then factorize it
(n - 2)(n - 1) = 0
first n
n - 2 = 0
n = 2
2nd n
n - 1 = 0
n = 1
so n can be 1 or 2