# Math Help - Standard form

1. ## Standard form

How would I work out $200(2.34x10^25)\mbox{without a calculator (then I can put it into standard form)}$

Sorry, the power should be 10 to the power of 25, not working for some reason

2. Originally Posted by Mukilab
How would I work out $200(2.34x10^25)\mbox{without a calculator (then I can put it into standard form)}$

Sorry, the power should be 10 to the power of 25, not working for some reason
When using latex it is preferable to use \times or \cdot to show multiplication as not to get confused with the variable x

$$10^{25}$$ $= 10^{25}$

I'd say that $200 = 2 \times 10^2$ so it would reduce to $2 \times 2.34 \times 10^2 \times 10^{25}$

3. Originally Posted by e^(i*pi)
When using latex it is preferable to use \times or \cdot to show multiplication as not to get confused with the variable x

$$10^{25}$$ $= 10^{25}$

I'd say that $200 = 2 \times 10^2$ so it would reduce to $2 \times 2.34 \times 10^2 \times 10^{25}$
Thank you, so I gather from that the answer is 4.68 $\times 10^{27}$

4. Sorry, what formula is your name regarding?

Never heard of $e^{i\cdot \pi}$

5. Originally Posted by Mukilab
Thank you, so I gather from that the answer is 4.68 $\times 10^{27}$
Indeed

Originally Posted by Mukilab
Sorry, what formula is your name regarding?

Never heard of $e^{i\cdot \pi}$
$e^{i\pi} = -1$ and it's a very famous identity in complex numbers, it's Euler's identity and comes from the fact that $e^{ix} = cos(x) + isin(x)$

Where $i^2 = -1$

6. thank you for the information.