how do you work out(49)1.5? I know the answers 827 but not why?
Why don't you join up? You are asking some good questions today :)
(49)1.5=(49)3/2=((49)1/2)3=(√4√9)3=(23)3=2333=827
Remember that 1.5 = 3/2.....so we have
(4/9)3/2 = [(4/9)1/2]3 = [√(4/9)]3 = (2/3)3 = 8/27