Question

verify a²-b²=(a-b)(a+b) by activity method
​

Answer 1

Step-by-step explanation:

a²-b²= (a-b)(a+b)

=a(a+b)-b(a+b)

=a²+ab-ab-b²

=a²(+ab-ab is kenshil out)-b²

a²-b² =a²-b²

LHS=RHS