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Solve

I got to

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- Jan 11th 2010, 12:18 PMMukilabSolving equation
**Step by step**please

Solve

I got to

or - Jan 11th 2010, 12:35 PMe^(i*pi)
- Jan 11th 2010, 12:55 PMMukilab
- Jan 11th 2010, 01:04 PMe^(i*pi)
- Jan 11th 2010, 01:11 PMbigwave
another way

x every term by 2 you have

take the square of both sides

- Jan 11th 2010, 01:23 PMArchie Meade
- Jan 11th 2010, 01:58 PMMukilab
/facepalm

- Jan 11th 2010, 02:08 PMArchie Meade
There's no problem,

no-one is judging,

but you learn from seeing your errors and correcting them.

Now, there are 2 answers,

since (3)(3)=9 and (-3)(-3)=9 for example.

Of course, they are the same thing really.

3(-3) means subtract 3 three times,

while -3(-3) means the opposite of that which is add 3 three times.

So, square roots have 2 answers. - Jan 11th 2010, 02:14 PMe^(i*pi)
In this case