Question

if a by b + B by a is equals to minus 1 then find the value of a cube plus b cube

Answer 1

Answer:

if we do cross multiplication here so we get,

2A + 2B = -1

4AB = -1

AB = 4 - ( -1 )

AB = 5 ----------( - , - = +)

AB = 5

AB cube = 125.