Question

what is the formula of (a-b) (a+b)​

Answer 1

Answer:

Step-by-step explanation:

a2-b2

where 2 is square

Answer 2

Answer:

Step-by-step explanation:

It comes up to (a^2)-(b^2)

See,

by factorisation,

(a-b)(a+b) = (a×a)-(b×b)-(a×b)+(a×b)

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

(Here, +ab and -about get cancelled out)

So,

= (a^2)-(b^2)

Done.