marieb39
31.07.2019 •
Mathematics
What are the roots of the equation x^2+2x-9=0?
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Ответ:
x =(-2+√-32)
Ответ:
44
Step-by-step explanation:
x^2 + y^2 = 14
(x-y)^2 x^2 + y^2 - 2xy = 14 -2 * (-15) = 44