Question

(a+b) (a-b) algebraic formula​

Answer 1

Step-by-step explanation:

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this formula is most important

Answer 2

Answer:

$a ^{2} - b {}^{2}$

Step-by-step explanation:

(a+b) (a-b)

multiply by opening brackets.

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

=a^2-b^2