How Do Exponential and Radical Properties Solve Textbook Problems?

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So this is what I have tried so far playing around with exponent and radical properties to try and solve this textbook problem
 

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Homework and problems from textbooks must be posted in the Homework & Coursework section. I have moved this thread.
 
Thanks. Sorry the picture is not orientated properly the PF app isn't playing nice...
 
Try doing a substitution.
 
Figured it out actually. Turns out I read the problem wrong. Thanks tho.
 
Thread 'Use greedy vertex coloring algorithm to prove the upper bound of χ'
Hi! I am struggling with the exercise I mentioned under "Homework statement". The exercise is about a specific "greedy vertex coloring algorithm". One definition (which matches what my book uses) can be found here: https://people.cs.uchicago.edu/~laci/HANDOUTS/greedycoloring.pdf Here is also a screenshot of the relevant parts of the linked PDF, i.e. the def. of the algorithm: Sadly I don't have much to show as far as a solution attempt goes, as I am stuck on how to proceed. I thought...

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