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Secondary 1 | Maths
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I rlly need help. Pls i need the solution
Date Posted: 4 years ago
Views: 226
126 x 294n
= 2 x 3² x 7 x 2 x 3 x 7² x n
= 2² x 3³ x 7³ x n
notice the indices for :
(a) " 2 " is 2
(b) " 3 " is 3
(c) " 7 " is 3
to hv perfect cube (*not " prefect "),
all the indices hv to be multiples of 3.
so the index for " 2 " is not multiple of 3
to make it a multiple of 3,
we hv n = 2
when n = 2
126 x 294n
= 2² x 3³ x 7³ x 2
= 2³ x 3³ x 7³
ans: n = 2
= 2 x 3² x 7 x 2 x 3 x 7² x n
= 2² x 3³ x 7³ x n
notice the indices for :
(a) " 2 " is 2
(b) " 3 " is 3
(c) " 7 " is 3
to hv perfect cube (*not " prefect "),
all the indices hv to be multiples of 3.
so the index for " 2 " is not multiple of 3
to make it a multiple of 3,
we hv n = 2
when n = 2
126 x 294n
= 2² x 3³ x 7³ x 2
= 2³ x 3³ x 7³
ans: n = 2
Thank u helped a lot
See 1 Answer
done
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n=2
Date Posted:
4 years ago
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