Question

(a^-1÷a^-1+b^-1)+(a^-1÷a^-1_b^-1)

Answer 1

Answer:

Step-by-step explanation:

this is in the formula

(a+b)(a-b)

=a²-b²

=(a⁻¹/a⁻¹)² = a⁻⁴

= (b⁻¹)² = b⁻²

= a⁻⁴-b⁻²