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katovenus [111]
3 years ago
10

Find center radius 3x squared + 3y squared + 30x - 42y- 141=0

Mathematics
1 answer:
almond37 [142]3 years ago
8 0
<u>Center and Radius</u>
3x² + 3y² + 30x - 42y - 141 = 0
x² + y² + 10x - 14y - 47 = 0
x² + 10x + y² - 14y - 47 = 0
x² + 10x + 25 + y² - 14y - 49 = 0
x² + 10x + 25 + y² - 14y - 49 = 47
x² + 10x + 25 + y² - 14y + 49 = 47 + 25 + 49
x² + 10x + 25 + y² - 14y + 49 = 121
(x + 5)² + (y - 7)² = 121
center: (-5, 7)
radius: 11



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