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8. Calculeaza, folosind formula (a+b) (a-b)=a²-b² a) (x+1) (x-1) b) (x+2)(x-2) c) (x+3)(x-3) d)(x+5)(x-5) URGENT!!!

Răspuns :

Răspuns:

a)

[tex](x - 1)(x + 1) = {x}^{2} - 1[/tex]

b)

[tex](x + 2)(x - 2) = {x}^{2} - 4[/tex]

c)

[tex]( x + 3)(x - 3) = {x}^{2} - 9[/tex]

d)

[tex](x + 5)(x - 5) = {x}^{2} - 25[/tex]