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Help pls

If 1+a^2=2sqr of a, what can a be?

 Apr 8, 2019
 #1
avatar+1354 
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A can be 1. Because 1 plus 1^2 equals 2, and 2 times the sqrr of 1 is 2. This equation lines up.

 Apr 8, 2019
 #2
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Use Graphing Calculator to get the two values for a:

 

a = 1   and    a = ≈0.29560

 Apr 8, 2019

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