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April 12th, 2014, 09:39 PM   #1
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Pretty simple problem

Hello!

Pretty simple problem I guess, just can't get my head around it, havent done math in a while so any help would be greatly appreciated!

64²/16² + 4²/B² = 1

so I guess

4 + 4/b = 1

it's from there I'm unsure how to solve the rest!
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April 13th, 2014, 01:25 AM   #2
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Your guess is incorrect. Try simplifying the numbers first, you should get to:
16 + 16/b² = 1
Then move the 16:
16/b² = -15
Then multiply by b²
16 = -15b²
Then divide by -15
b² = -16/15
Now root it
b = 4i/root(15)
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