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Rainbow [258]
2 years ago
15

What is the shape of -2x^(2)+6y^(2)+5x+5y-4=0

Mathematics
1 answer:
Damm [24]2 years ago
3 0

Answer:

Step-by-step explanation:

circle

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y + 2 (Take the +2 and make it -2)

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3 years ago
Find a third-degree polynomial equation with rational coefficients that has roots -4 and 6 + i.
dolphi86 [110]

Answer:

x³ - 8x² - 11x + 148

Step-by-step explanation:

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The polynomial is the product of the factors, that is

p(x) = (x + 4)(x - (6 + i))(x - (6 - i))

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      = (x + 4)(x² - 12x + 36 + 1)

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      = x³ + 4x² - 12x² - 48x + 37x + 148

      = x³ - 8x² - 11x + 148

 

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