216k views
5 votes
What is: 1/1+a+b^-1 + 1/1+b+c^-1 + 1/1+c+a^-1 please write the steps and explain

2 Answers

2 votes

The expression:

It is possible that there are values for a, b, and c, but are omitted. If this is not the case, then the expression can be rewritten in another form. These are about all that can be done.

The second case is more plausible, given there are no values given for a, b, and c.

The expression can be rewritten as:

When a number has an index of -1, it is the same as taking the reciprocal of the number.

That is;

Therefore, the whole expression gives:

Taking the common denominator in the first three expressions, we have

It is also possible to take the common denominator of the whole whole expression, this will however, make the expression look more tedious, rather than simple.

User Master Slave
by
6.3k points
3 votes

Explanation:

The expression:


(1)/(1+a) + b^(-1) + (1)/(1+b) + c^(-1) + (1)/(1+c) + a^(-1)

It is possible that there are values for a, b, and c, but are omitted. If this is not the case, then the expression can be rewritten in another form. These are about all that can be done.

The second case is more plausible, given there are no values given for a, b, and c.

The expression can be rewritten as:


a^(-1)+b^(-1)+c^(-1) + (1)/(1+a) + (1)/(1+b) + (1)/(1+c)

When a number has an index of -1, it is the same as taking the reciprocal of the number.

That is;


a^(-1) = (1)/(a)

Therefore, the whole expression gives:


(1)/(a) + (1)/(b) + (1)/(c) + (1)/(1+a) + (1)/(1+b) + (1)/(1+c)

Taking the common denominator in the first three expressions, we have


(a+b+c)/(abc) + (1)/(1+a) +(1)/(1+b) + (1)/(1+c) \\

It is also possible to take the common denominator of the whole whole expression, this will however, make the expression look more tedious, rather than simple.

User Josephine Moeller
by
5.5k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.