Hi, I have an neg. exponent in my equation below. This is what the question asks for:
7. Solve each equation. Check for extraneous roots.
How would I solve this?
Sure it works.
.
Seeing it this way should scream multiply both sides by the common denominator, which is . So,
Now, make life easier by using the assignment .
The equation then becomes .
Rewrite the equation as .
Factoring, we get:
.
No, you are incorrect. According to my answer I got help and the answer book the answers are and . Never in my career of high school I was taught that one can put a fraction into a polynomial to make it a polynomial.
These were the steps that one has to take to get the correct answer
Let a =
or
or
or
The method (if not some of the details) used by abender is correct and is completely consistent with the solution given by the 'answer book'. Note:
.
can be written in the form yur answer uses by using the change of base rule. Alternatively, .
I will also add that the question as originally posted made no reference to a particular method, so the hint given in post #2 is completely justified.
This thread is now closed.