## anonymous 5 years ago √-75 write the complex number in stardard form

So, the same applies as with your previous question. Try coming up with the answer based on that and post it, then we'll see if it's right, and if it's wrong I'll explain the process again.

2. anonymous

i know can you example the reason again

So if you have any negative number -a, that's the same as saying -1 * a. Above, we have -75. That's the same as -1 * 75. Finally, $$\sqrt{-1} = i$$.

4. anonymous

Not quite. Since we know -1 * 75 = -75, we get: $\sqrt{-1 * 75}$ $\sqrt{-1}\sqrt{75}$ What's $$\sqrt{-1}$$ again?

6. anonymous

1

7. anonymous

i

8. anonymous

isn't it$5\sqrt{3}i$