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Va rog urgenttttttt? ​

Va Rog Urgenttttttt class=

Răspuns :

Răspuns:

(a+3)²=a²+3²+6a

(2x-5)²=4x²-2·2x·5+5²

(a+√3)²=a²+3+2a√3

(a+2)(a-2)=a²-2²

(x-3)²=x²-6x+9

(x+y)(x-y)=x²-y²