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Unfortunately the browser used for posting questions does not permit mathematical symbols. It is, therefore, necessary to spell the words out.
If your question refers to (a - b)6 - which would need to be written out as open bracket a minus b closed bracket to the 6th power - the answer is b6.
If your question is about any other expression, I regret you will have to sumbit it in the long form. Very tedious, I am afraid. At least the browser for posting replies is less unusable.
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What is the seventh term of the sequence whose nth term is n plus 1n-2?
-1
If the seventh term of an arithmetic progression is 15 and th twelfth term is 17.5 find the first term?
There are 5 common differences between seventh and twelfth terms, so the CD is 2.5/5 ie 0.5. First term is therefore 15 - 6 x 0.5 = 12.
What is the common difference when the first term of a sequence is 12 and the seventh term is 36 and the last term is 144?
If the first term is 12 and the seventh term is 36, then we have gone up 36-12 in the space of 6 term changes. This is 24 per 6 changes, which can be written as the division 24/6. This works out as 4. Thus the common difference in the sequence is 4.
What is the value of the seventh term in the sequence 1 -3 -7 -11 -15?
every next term is 4 smaller than previous so 7th term = -23
What is the seventh term in the following sequence 1 -2 4 -8?
1 - 2 - 4 - 8 - 16 - 32 - 64 the sequence doubles
