Question

simplify (a-¹+b-¹)÷(a-²-b-²)​

Answer 1

Step-by-step explanation:

(1/a + 1/b) / (1/a^2 - 1/b^2)

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

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

(a + b/1) / (b^2 - a^2 / ab)

(a + b) ( ab) / (b + a) (b -a)

:• b^2 - a^2 = (b + a) (b -a)

(ab) / ( b - a)