7.6 #19 ES
root of y=5=2-root y-4
the index is 2 so I square both sides of the equation.
I got as far as (5)^2=-4 root y-4.
the answer in the book is 25+64=16y-64+64 (I would like to know how did 64 come about and how did they get 16y?
7.6 #19 ES root of y=5=2-root y-4 the index is 2 so I square both sides...
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