That still wouldn't equal the answer given in the textbook. The answer is: (2 +- sqrt2)/2
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Okay, you found: Now, let's multiply this by Your answer is equivalent to that given by your textbook, just in a different form.
Okay, thanks. This is going to sound really stupid, but it's just to clarify my understanding: How does 2 x sqrt(1/2) = sqrt2?
Thanks!
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