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24.09.2019 •
Mathematics
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Answers on questions: Mathematics
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Ответ:
answer:
what?
step-by-step explanation:
Ответ:
x + 4 = 0
x = - 4
=> Substitute - 4 for x in 3x² - x - 2, i.e.
3(- 4)² - (- 4) - 2
= 3 * 16 + 4 - 2
= 48 + 4 - 2
= 52 - 2
= 50 ...
-4|----3----(-1)----(-2)
-------------(-12)------52
________________
------3------(-13)----50