Question

give me the full formula (a+b)(a-b)=?

Answer 1

full formula of (a+b)(a-b)= a²-b²
by a(a+b)=a²+ab and -b(a+b)= -ab-b²
by adding a²+ab and -ab-b² we get the answer a²-b²

Answer 2

(a+b) (a-b) = a²-b²
this is the formula