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Sagot :

Bonjour

Factoriser chaque expression.

a. 5 - 492 =

= 5 * 1 - 5 * 98,4

= 5(1 - 98,4)

b. 100y2 - 3=

= (10y)^2 - (V3)^2

= (10y - V3)(10y + V3)

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