Question

what are the
factors of a^2 - 81​

Answer 1

Step-by-step explanation:

factors of a^2 - 81

(a-9)(a+9)

factors are 9,-9

Answer 2

Answer:

(a-9)(a+9)

Step-by-step explanation:

a²-81

a²-9²

(a-9)(a+9)

#Formula - a²-b² = (a+b)(a-b)