Factoriser a = (x-3)(x+3)-2(x-3)

Sagot :

Bonjour,

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

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

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

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