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16.01.2021 •
Mathematics
PLEASE HELP DUE SOON FIRST GOOD ANSWER GETS BRAINLIEST show that x^2 + y^2 + z^2 = 3(2x-y) -1 is a sphere
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Ответ:
Step-by-step explanation:
x² + y² + z² = 3(2x - y) - 1
x² + y² + z² = 6x - 3y - 1
x² - 6x + y² + 3y + z² = -1
(x - 3)² + (y + 1.5)² + z² = -12.25
(x - 3)² + (y + 1.5)² + z² = -(3.5)²
Since it follows the general equation form, it is a sphere.
Ответ: