Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 259380: -9x^2 = 9
Click here to see answer by ilovemath(8)

Question 259380: -9x^2 = 9
Click here to see answer by Alan3354(69443)

Question 260901: What is the absolute value of 4+i?
Click here to see answer by drk(1908)

Question 260939: how has your interpretation of solutions to quadratic equations changed?
Click here to see answer by richwmiller(17219)

Question 260937: -2x^+5x-3=0
Click here to see answer by checkley77(12844)

Question 261070: I need help setting this one up.
Two numbers have a sum of 11 and a difference of 67. What are the numbers?
Click here to see answer by Edwin McCravy(20054)

Question 261566: if z/3+2i=5-2i, how do you find z in a+bi form?
Click here to see answer by richwmiller(17219)

Question 261683: factor
3x^4 y^2 - 3x^2y^2
Click here to see answer by checkley77(12844)

Question 261683: factor
3x^4 y^2 - 3x^2y^2
Click here to see answer by PRMath(133)

Question 261816: How do I solve: 2+xi=y+3i
Click here to see answer by solver91311(24713)

Question 262390: Hello, I am trying to factor an expression. I can't seem to get the right answer. The question is 2x squared minus 7x plus 6. I need to factor the question so it looks something like this 2(x+1)(x-6) I can't figure it out thanks.
Click here to see answer by drk(1908)

Question 262303: find 2 numbers who's product is -4779 and who's sum is -342
Click here to see answer by checkley77(12844)

Question 263170: graph -0.2x^2 + 14x + 11
Click here to see answer by oberobic(2304)

Question 263247: What is 2 and 8, is it 2*8 or 2+8
Click here to see answer by mducky2(62)

Question 263314: Find the root of the quadratic equation. x^2-8x+15=0
Click here to see answer by Theo(13342)

Question 264075: write a quadratic equation having the given numbers as solutions.
3/5, -9
Click here to see answer by Greenfinch(383)

Question 264075: write a quadratic equation having the given numbers as solutions.
3/5, -9
Click here to see answer by JBarnum(2146)

Question 264075: write a quadratic equation having the given numbers as solutions.
3/5, -9
Click here to see answer by karibet(1)

Question 264155: 81x^2 -4y^2 divided by 9x^2 - 25xy - 6y^2
Click here to see answer by checkley77(12844)

Question 265248: how do you solve for x and y with the imaginary numbers?
Click here to see answer by drk(1908)

Question 265289: How to set up the problem when finding the quotient of two complex numbers?
Click here to see answer by stanbon(75887)

Question 265496: I am doing a practice exam for my GRE and I am stumped on this type of problem. Can you help?
3. Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 � hours. How quickly can all three fill the pool together?
A. 12 minutes
B. 15 minutes
C. 21 minutes
D. 23 minutes
E. 28 minutes

Click here to see answer by Theo(13342)

Question 265623: How do you find the modulus of z= 3/(5+7i) ? I am asked to find the modulus and Arg(z), but I cannot figure out what x & y are for |z|=sqrt(x^2+y^2) (the modulus).
Thanks!
Click here to see answer by Alan3354(69443)

Question 265688: What is the square root of 550x over 49?
Click here to see answer by solver91311(24713)

Question 265771: how do i show that 3+2i; 3-2i/13 is multiplicative inverse of one another?
Click here to see answer by Edwin McCravy(20054)

Question 265813: Can you explain what the i in a complex number stands for and why it is necessary in some problems?
Also, can you explain the procedures of completing the square of a quadratic equation
Click here to see answer by stanbon(75887)

Question 265950: What is 7+ 4i divided by 9 - 3i?
Click here to see answer by drk(1908)

Question 265950: What is 7+ 4i divided by 9 - 3i?
Click here to see answer by Alan3354(69443)

Question 266129: If [{modulus of(z-i)}/{modulus of(z+i)}]=1
and iz=k. Then find k.
Click here to see answer by Alan3354(69443)

Question 266199: I have 2 question i have answered both but am not confident with the answers.
(2+3i)(x+yi)=23+2i find values for x and y.
express root 2 cis (5pi/4) in cartesian form.
Thak you for your help.
Click here to see answer by stanbon(75887)

Question 266600: how to solve with Given that (x+iy)/(2-i) , find x and y.
Click here to see answer by drk(1908)

Question 267118: Please help with the following to solve these equations for complex solutions and write answer in standard form
x^2-10x+29=0
Click here to see answer by richwmiller(17219)

Question 267513: You are playing paintball with a friend who is standing 15 meters away from you. You shoot at her and miss. The paintball has a horizontal velocity of 150 meters per second. Which of the following sequences describes the distances of the ball from you, in meters, at one-tenth second intervals, starting when it swooshes by her?

Click here to see answer by stanbon(75887)

Question 267913: (x-5)squared-x=30
Click here to see answer by unlockmath(1688)

Question 268311: xsquared = negative 4

Click here to see answer by stanbon(75887)

Question 268448: 10x + y - (10x + y) + 7
Click here to see answer by drk(1908)

Question 268572: 3i
_____
4+2i
Click here to see answer by stanbon(75887)

Question 268742: How do you solve 5x^2-9x+1=x^2-14x+7?
Click here to see answer by persian52(161)

Question 268757: How do you solve (2x-7)(x+1)=-4?
also -12=2(x+4)^2?
Click here to see answer by persian52(161)

Question 268901: How can I solve this equation for b?.... i/a+i/b=3/c Please show steps
Click here to see answer by stanbon(75887)

Question 268901: How can I solve this equation for b?.... i/a+i/b=3/c Please show steps
Click here to see answer by Earlsdon(6294)

Question 269096: how do you do i+(11-5i)
write the expression as a complex number in standard form.
i am not sure but i think you do
-i to the -5i
so you get (11-6i)?
am i correct? or if i am wrong please show me how to please?
Click here to see answer by jim_thompson5910(35256)

Question 269114: (sqrt-75)^3
Click here to see answer by checkley77(12844)

Question 269114: (sqrt-75)^3
Click here to see answer by Alan3354(69443)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380