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KATRIN_1 [288]
3 years ago
11

X2 - 4x + y2 - 21 = 0 The equation in standard form is​

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
7 0
Standard Form:
(X - 2)2 + y2 = 25
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arsen [322]

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For an object whose velocity in ft/sec is given by v(t) = −t2 + 2, what is its displacement, in feet, on the interval t = 0 to t
Sedbober [7]

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3 years ago
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Step-by-step explanation:

Factor:

2x^2 - 18

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*Notice that x^2 - a^2 can always be factored into (x-a)(x+a)

where a is a constant so in this case, a is 9 which is also 3^2

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x^2 - 2x - 3

1. Think what two numbers multiplied together is -3 and added together is 2

-> 3 and -1 since 3(-1) = -3 and 3+ (-1) = 2

2. Factor x^2 - 2x -3 into (x - 3)(x + 1)

Therefore, since both 2x^2 - 18  and x^2 - 2x -3 do not have another common factor besides x - 3, x - 3 is the HCF of 2x^2 - 18  and x^2 - 2x -3.

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3 years ago
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im sorry if i give a wrong answer

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8 0
3 years ago
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