Quadratics Flashcards

1
Q

B^2 - 4ac = 0

A

Un gwreiddyn real

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2
Q

B^2 - 4ac > 0

A

Dau wreiddyn gwahanol real

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3
Q

B^2 - 4ac < 0

A

Dim gwreiddyn real

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4
Q

Cwblhau’r sgwar (x^2 + ax - c) = 0

A

(X + A/2) ^2 - a^2 - c = 0

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5
Q

Ax^2 > 0

A

Pwynt min

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6
Q

Ax^2 < 0

A

Pwynt max

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7
Q

Graff efo pwynt min

A

U

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8
Q

Graff efo pwynt max

A

n

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9
Q

Steps i fraslunio cromlin

A
  • pwynt min neu max?
  • B^2-4ac
  • croestoriad exhelin x
  • croestoriad echelin y
    - rhoi X=0
  • cwblhau’r sgwar
    - cal yr min
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10
Q

Datrys hafaliada cydamserol

A
  • cal un yn equal i y neu x
  • amnewid yn y llall
  • symleiddio
  • ffactorio neu quadratic formula
  • cal X a Y
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