Q6 Without actually calculating the cubes, evaluate:-
30 cube + 20 cube -50 cube
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0
Answer:
0 cube . Hope it helps . take care have a good day
suhasarava3:
its wrong
Answered by
4
given,
(30³+20³)-50³
it is in the form of a³+b³, which is equal to (a+b)³-3ab(a+b)
=(30+20)³-3*30*20*(30+20)-50³
=50³-1800(50)-50³
=-1800(50)
=-90000.
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