Question

Scretii si mie toate formulele de calcul prescurtat ???

Answer 1

(a+b)^2= a^2+2ab+b^2 (a-b)^2=a^2-2ab+b^2 (a+b+c)^2=a^2+b^2+c^2+2ab+2ac+2bc (a-b)(a+b)=a^2- b^2 a^3+b^3=(a+b)(a^2-ab+b^2 (a+b)^3=a^3+3a^2b+3ab^2+b^3