Question

Calculati : (a+b)la puterea a 2 a - ( a-b) la puterea a 2 a

Answer 1

(a+b)^2-(a-b)^2=a^2+2ab+b^2-a^2+2ab-b^2=4ab

Answer 2

$( a + b ) ^{2} - ( a- b ) ^{2} = ( a + b )^{2} + ( a + b ) ^{2} ..$