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Identités remarquables F=(x+2)(3x+1)-(x+2)(2x+3) Factoriser F

Sagot :

TERMINALS

F=(x+2)(3x+1)-(x+2)(2x+3)=(x+2)[(3x+1)-(2x+3)]=(x+2)(x-2)=x²-4

SMALA04

(x+2) x [(3x + 1) - (2x + 3)]

= (x+2) (3x + 1 - 2x - 3)

= (x+2) (x-2)