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Sagot :

Bonjour

écrire la forme canonique de

g(x)=2x au carré+5x-8

= 2(x^2 + 5x/2 - 4)

= 2(x^2 + 2 * x * 5/4 + (5/4)^2 - (5/4)^2 - 4)

= 2[(x + 5/4)^2 - 25/16 - 64/16]

= 2[(x + 5/4)^2 - 89/16]

= 2(x + 5/4)^2 - 89/8

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