3√216-³√343 is equal to(1,-1,29,-28)
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Correct option is
B
−42
On prime factorising, we get,
216=
6×6×6
=6
3
.
343=
7×7×7
=7
3
.
Then, −343 =(−7)
3
.
Therefore, value of
3
216×(−343)
is:
3
6
3
×(−7)
3
=6×(−7)=−42.
Therefore, option B is correct.
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