Question

prove that 0.75x0.75x0.75+0.25x0.25x0.25 /0.75x0.75-0.75x0.25.

Answer 1

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= {0.75*0.75*0.75 + 0.25*0.25*0.25} / {0.75*0.75-0.75*0.25)

= (0.75) power 3 + (0.25) power 3 / 0.75*0.25*2

= 27*(0.25) power 3 + (0.25) power 3 / 0.25*0.25*6

= 28*0.25/6
= 14*0.25 / 3
= 3.50/3
= 3.5/3
= 35/30
= 7/6