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19.08.2021 •
Mathematics
A + b = 0 Which of these is equal to b?
0
1/a
a
-a
Please help!
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Ответ:
x = 3
or
0 = x + 2
x = -2
so x = -2, 3. These solutions mean that only when x = -2 or 3, then the quadratic expression is equal to 0.