How do I figure (17 + a)^ = 2209

I know a = 30, but how do I get the answer?

2 answers

I think your problem is:

(17 + a)^2 = 2209

What is 47 squared?
did you mean (17+a)^2 = 2209 ?

IF so, take √ of both sides

17+a = √2209
17+a = 47
a = 47-17
a = 30