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shelbiec5355
07.09.2019 •
Mathematics
)the class boundary between two consecutive classes is
a. the difference of their lower class limits divided by 2
b. the average of their upper class limits
c. the difference of their class midpoints divided by 2
d. the middle point between them
e. the difference of their upper class limits divided 2
f. the average of their lower class limits
g. none of the above.
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Ответ:
D
Step-by-step explanation:
(x - 1)² = (x - 1)(x - 1)
x² - x- x + 1 = x² - 2x + 1