e=mc^2

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Questions

The following questions were asked by visitors named e=mc^2.

Help! I need an explanation of how to do this: (3x-1)(5x+4)

Answers

The following answers were posted by visitors named e=mc^2.

Problem 7a theta = pi/4 phi = 5*pi/2

Problem 7b 1/2+i/2 1/sqrt(2)

Thanks @mathhelper ! it was correct

And it really helped! Hence your username