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x2+12x-11
Comment déterminer la forme canonique "à la main" ?
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Comment déterminer la forme canonique "à la main" ?

x2+12x-11

Commencer

x2 + 12x - 11

un autre exemple

x2 + 12x +....

36

-36

x2 + 12x - 11 =

- 11

= (x+6)2

- 36

- 11

= (x+6)2 - 47

x2+12x+36=(x+6)2

x2 - 16x +1

retour 1er exemple

x2 - 16x + ?

64

-64

x2 - 16x + 1 =

+ 1

= (x-8)2

- 64

+ 1

= (x-8)2 - 63

x2-16x+64=(x-8)2

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