How do u solve this quadratic (1 Viewer)

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This is an equation that is reducible to a quadratic, in this case by the substitution



to produce the quadratic




Watch out for these being concealed by using index laws, such as by posing the above question as



or ones like

(which also uses and gives only one solution, )

or

(which is trickier, but also has only one solution, ).


I'll leave you to consider what substitution is needed for the second one.
 

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