using a suitable identity, evaluate (43)^3 - (18)^3 - (24)^3
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there has to be sm issue with the ques itself....because in such questions the result of the numbers after simplification shud be zero (o).
Fr eg:
(8)^3 - (5)^3-(3)^3
x= 8
y= -5
z= -3
x+y+z= 8+ (-5) + (-3)
= 0
since, x+y+z= 0
therefore, x^3+y^3+z^3= 3xyz
so the answer is, 3*-5*-3
=45
...hope this answer helps :)
Fr eg:
(8)^3 - (5)^3-(3)^3
x= 8
y= -5
z= -3
x+y+z= 8+ (-5) + (-3)
= 0
since, x+y+z= 0
therefore, x^3+y^3+z^3= 3xyz
so the answer is, 3*-5*-3
=45
...hope this answer helps :)
nikhil97:
nope the question is correct
well..even if it is, hope you are satisfied with my answer including an example of the identity and explanation.
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