# Questions on Algebra: Complex Numbers answered by real tutors!

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 Algebra: Complex Numbers Solvers Lessons Answers archive Quiz In Depth

 Question 10329: Solve the following: I = E/R + r for r I understand how to do this if there was not a "+ r" in the equation, but I am lost when it comes to the "+ r". I don't know what you do with it. I think it would turn into a "1r". I = E/r, then multiply both sides by r,and end up with the answer: E/I = r? Please let me know if this is correct, of if I am at least on the right track. Thanks for your help. Click here to see answer by rapaljer(4667)

 Question 10349: can we correlate the complx numbers into political science.former chief election commissioner of india opined that solvation of langrangian equations gives results for political problems.write few Langrangian equations.is it possible to correlate mathematics to political science. Click here to see answer by rapaljer(4667)

 Question 10848: Solve the following equation in the complex number system 1.X^3 - 8 = 0 2. X^3 + 27 = 0 my solution 1. X^3 - 8 = 0 X^3 = 8 X= 3root 8 X= +- 2 X= +2 , -2 2. X^3 + 27 = 0 x^3=27 X =+- 3root 27 X= + - 3 X= =3, -3 I know I'm wrong but I don't know why. kindly help. Click here to see answer by Earlsdon(6287)

 Question 11184: how can we convert complex number to real number? Click here to see answer by longjonsilver(2297)

 Question 11246: It has been a while. How do I solve -7x + 4x = 9 ? Thank you Click here to see answer by roxy9229(32)

 Question 11793: It has been 17 years since I have taken Algebra and now I am taking College Algebra. My instructor has given several problems that I can't figure out. 1) Find the slope-intercept form of the equation of the line through the point (-5,-3), parallel to the line 7x-6y=-1. My work: y=mx+b 7x-6y=-1 7x-6y=-1 -6y=-7x-1 y=7/6x+6 How do I coplete the problem? Thanks Click here to see answer by rapaljer(4667)

 Question 11800: I don't understand inverse functions: f(x)= 2-4x/1-5x I can't even begin to work this one! Thanks for your time! Click here to see answer by rapaljer(4667)

 Question 12254: hello mam\sir i have some doubts in following questions 1.find the cube root of 3+isquare root 3 2.if z=x+iy ,proove that |x|+|y|less than or equal to sqareroot2|z| 3.proove [ a+b omega+c(omega)^2] divided by [a omega+b (omega)^2+c]=(omega)^2 4.proove 1+(omega)^n+(omega)^2n=0 when n=2,4 thank you in advance Click here to see answer by khwang(438)

 Question 13582: How do you reduce the following problem into A+Bi form: (i/(1-i)) + ((1-i)/i) I tried dividing the first and second part of the problem as separate entities but all I ended up with was ((1+i)/2) + (-i-1) and that didn't really help much. Click here to see answer by longjonsilver(2297)

 Question 14019: Describe the pattern you observe in the table. Verify that the pattern continues by evaluating the four powers of i. i2= I need you to help me with the pattern all the way to i40. Thanks. I need it before 12:00p.m. i3= i4= i5= i6= Click here to see answer by Earlsdon(6287)
 Question 14019: Describe the pattern you observe in the table. Verify that the pattern continues by evaluating the four powers of i. i2= I need you to help me with the pattern all the way to i40. Thanks. I need it before 12:00p.m. i3= i4= i5= i6= Click here to see answer by bam878s(77)

 Question 14062: What is i83= Thank you. I need before 12:00 and could explain why the pattern of imaginary numbers repeat themselves? It would really help me on my test tommorrow!!!!!!!!!!!!1 Click here to see answer by bam878s(77)

 Question 14133: I am having a hard time evaluating this problem and have come up with three different ways so I just want to check and see what I am doing right or wrong. Evaluate 3a 3 +(3a) 2 when a=3 Thanks Kelli Click here to see answer by akmb1215(68)

 Question 13640: If 8x+5x+2x+4x=114, then 5x+3=? a)12 b)25 c)33 d)47 e)46 Click here to see answer by LilSkittleMd(119)

 Question 14374: how can i find the argument of (1+i)^13/(1-i)^7 Click here to see answer by khwang(438)

 Question 14578: What would be an equation with the solutions 5+2i,5-2i Click here to see answer by venugopalramana(3286)

 Question 14705: Evaluate the expression i^84 and write the result in the form a+bi. That is the problem that i was given and I dont understand what they mean buy the form a+bi form... Thanks Click here to see answer by rahman(247)