005 Sample Final A, Question 8

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Question Solve the following equation,     

1) What substitution can we make to simplify the problem?
1) Substitute to change the original equation into

Step 1:
Start by rewriting and make the substitution
Step 2:
After substitution we get
Step 3:
Now we have to find the zeros of and . We do this by first isolating in both equations.
So and
Step 4:
We observe that has no solutions. We can solve by taking of both sides.
This gives
Final Answer:
x = 0

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