Question

If a/b +b/a=2, then what is the value of a³-b³?

Answer 1

Step-by-step explanation:

$\frac{a}b}$ + $\frac{b}{a}$ = 2 simplifies to  a = b

so a³-b³ = 0

To prove it:

eg. a= 5 b=5  ($\frac{5}{5}$ + $\frac{5}{5} = \frac{10}{5} =2$ )

5³ = 125

5³ =125

so 125 - 125 = 0

Answer 2

Answer:

your answer attached in the photo