Question

(a+b) (a-b)=a2-b2 true or false

Answer 1

Answer:

true....

(a+b) (a- b)

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

= a^2 +ab - ab +b^2

..(+ab - ab get cancelled)

=a^2 - b^2

Thus, (a+b) (a- b) = a^2-b^2