Question

Cat face ?
Cred ca face  x la puterea 2 + 2 la a 2 dar vreau sa stiu daca e bine :)))
(x-2)(x+2) 

Answer 1

(x-2)(x+2)=x²-2²=x²-4 conform formulei (a-b)(a+b)=a²-b²

Answer 2

(x-2)(x+2)= x^2 -4 ............................