anonymous
  • anonymous
write complex number in standard form
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
|dw:1370559446625:dw|
anonymous
  • anonymous
should this be \[\sqrt{-25}+7\] ?
anonymous
  • anonymous
no it has it on the outside

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
what is the square root of 25?
anonymous
  • anonymous
@dubindabay ,5
anonymous
  • anonymous
*facepalm*
anonymous
  • anonymous
5
anonymous
  • anonymous
|dw:1370559970723:dw|
anonymous
  • anonymous
take out the sqrt(-1), then just do the problem as you normally would
anonymous
  • anonymous
so just do |dw:1370560474688:dw|
anonymous
  • anonymous
yeah, just dont forget the i: \[i*\sqrt{\frac{ 18 }{ 25 }}\] and then just factor it like you did for all the other problems
anonymous
  • anonymous
ok another question: write the expression as a complete number in standard form 3-(2+2i)+41 *adding and subtracting complex numbers
anonymous
  • anonymous
just collect all the "real" terms (everything that doesn't have an i in front) and all the imaginary terms (everything with an i in front). and don't forget pemdas
anonymous
  • anonymous
what is pemdas
anonymous
  • anonymous
that's a description of the order of operations. from first to last: Parentheses,Exponents,Multiply/Divide,Add/Subtract
anonymous
  • anonymous
so you do 2+2i first but you cant combine those
anonymous
  • anonymous
right, so after you realize that, you multiply in the minus sign. then you have 3-2-2i+41. just combine everything that doesn't have an i, and everything (in this case only -2i) that does have an i, and you're done
anonymous
  • anonymous
I don't get it you must think I'm stupid huh
anonymous
  • anonymous
of course not. heres the reason I'm referring to pemdas: you have an equation 3-(2+2i)+41 we can rewrite this in the following way: 3+[(-1)(2+2i)]+41. Notice that we now have parentheses and a multiplication. inside of the parenthesis is a -1 multiplying (2+2i). so we do that first. then we have: 3+(-2-2i)+41 we can drop the parentheses at this point. 3-2-2i+41
anonymous
  • anonymous
grouping the terms: 3-2+41-2i
anonymous
  • anonymous
the 4 has a i too
anonymous
  • anonymous
oops I missed that. tell me what our equation is then (after multiplying in the minus sign)
anonymous
  • anonymous
what you mean when are you supposed to multiply
anonymous
  • anonymous
you only multiply the minus sign. to get rid of the parenthesis you have to multiply in the minus sign. in other words to go from: 3-(2+2i)+4i to something you can actually work with, you need to multiply out the minus sign. You end up with this: 3-2-2i+4i
anonymous
  • anonymous
then you subtract 3 and 2
anonymous
  • anonymous
and you add -2i and 4i.
anonymous
  • anonymous
so what would my answer me
anonymous
  • anonymous
you tell me. you have all the pieces
anonymous
  • anonymous
i dont do have all the pieces cause i dont understand why 2i is negative or how to subtract 3 and 2 is it the regular way or something else
anonymous
  • anonymous
what is -1*(2+2i)?
anonymous
  • anonymous
-2 and -2i
anonymous
  • anonymous
right so you agree that the expression 3-(2+2i)+4i = 3-2-2i+4i?
anonymous
  • anonymous
yeah
anonymous
  • anonymous
someone help me

Looking for something else?

Not the answer you are looking for? Search for more explanations.