Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 209218: 3 - 6i
------ > Divided By
6 + 4i
Click here to see answer by stanbon(75887)

Question 208940: 12h^2 - 6h + 6h^2 - 2h
Click here to see answer by RAY100(1637)

Question 208574: there are three problems i need help
2+i=
3+2i+2+i=
5+2i.3+i=
Click here to see answer by Alan3354(69443)

Question 210337: Solve for x^2 + 61 =12x answer must be in form a+bi
Click here to see answer by ankor@dixie-net.com(22740)

Question 210457: how do you write the expression -2+4i/6+3i as a complex number in standard form?
Click here to see answer by solver91311(24713)

Question 210454: How do you write the expression (-6-29i)+(8-12i) as a complex number in standard form?
Click here to see answer by Earlsdon(6294)

Question 210455: how do you write the expression 2i(5+i)(-2+7i) as a complex number in standard form?
Click here to see answer by stanbon(75887)

Question 211101: Hi I need help with these questions:
1. -9+i/-9-3i I divided the num and dem by the recip -9+3i and then used FOIL is that correct then simplified My answer was 13/15-3i/15 help
2. x^-6x+17=0 Do I use the quadr formula to solve this I did and got 4-i and 4+i
3. (x^+3x)+5=0 help my ans were not close to the choices I had (also noted is problem that I=sqrt of 1)
4. (x^-2x)+7=0 help my ans were not close to the choices I had (also noted is problem that I=sqrt of 1)
5. (x^+2x)+7=0 help my ans were not close to the choices I had (also noted is problem that I=sqrt of 1)

Click here to see answer by jim_thompson5910(35256)

Question 211188: How does one determine the number of roots of unity? The solution for the following problems must be made using the radian not polar rectangular approach:
(1-i)^1/4
(1+i*sqrt(3)^7/2
(-i)^1/2
These problems I have to work are not from my text, but rather from the instructor. My textbook is:
Tristan Needham's - Visual Complex Analysis ISBN 978 0 19 853446 4 (pbk)
Click here to see answer by stanbon(75887)

Question 211347: Divide: 8/9i
Click here to see answer by stanbon(75887)

Question 211347: Divide: 8/9i
Click here to see answer by Alan3354(69443)

Question 211373: -(6-2^3-3)^2 + 2 x (-4)
Evaluate
Click here to see answer by rapaljer(4671)

Question 211377: -4(-6t - u) + 4 (2u + 6t)
Click here to see answer by rapaljer(4671)

Question 211378: ( x^4)^2
----
-2y^2
Sorry if it's not easy to understand. The problmer is a fraction within parentheses the only number outside the parenthesis is the 2 exponent. I am to simplify without the parenthesis. Thanks in advance
Click here to see answer by rapaljer(4671)

Question 211382: I need to solve for B
S = 2B + Ph
where B is the area of the base, P is the perimeter of the base and h is the heigth of the prism.
Click here to see answer by rapaljer(4671)

Question 211412: Simplify the below
z^4 y^2 a^5
___________
z^6 y
Click here to see answer by RAY100(1637)

Question 211411: Find the values of x and y that solve the system equation
-4x + 5y = -10
5x - 4y = 8
Click here to see answer by RAY100(1637)

Question 211450: I have gotten several diffrent answers for the below and not sure if you multiply the bottom of the fraction or not with the exponent:
(x^4)^2
----
-2y^2
This is a fraction and the 2 is outside the parenthese. I need to simplify without parenthesis
Click here to see answer by Earlsdon(6294)

Question 211457: Need to solve for Y
-9 = 3
___
y
3/y is a fraction. Thanks
Click here to see answer by Earlsdon(6294)

Question 211461: 8 u
_ = __
7 11
need to solve for U. These are both fractions
Click here to see answer by RAY100(1637)

Question 211463: Factoring
4x^2 + 19xy + 12y^2
Click here to see answer by RAY100(1637)

Question 211455: Reducing to lowest term
T^2 + 6T + 8
____________
2T^2 - 8
This is a fraction. Thanks in advance
Click here to see answer by ankor@dixie-net.com(22740)

Question 211635: Simplifing and assuming the variables represent positive numbers
z square root of 48zw^2 - 2w square root 75z^3
Click here to see answer by Alan3354(69443)

Question 211473: Need to simplify
(x^4)^2
_____
(-2y^2)
The fraction is surrender within parenthesis and their is a 2 eponent outside the parenthesis
Click here to see answer by checkley77(12844)

Question 211338: Please help my divide (4x^3-17x^2+7x+10) by (4x-5)
Click here to see answer by Edwin McCravy(20054)

Question 211652: rewrite each set in indicated notation.
(-infinite,3) (5,11) in words
Click here to see answer by rfer(16322)

Question 211722: x+4/4x divided by x+4 how do you get the fraction out of the numerator

Click here to see answer by Theo(13342)

Question 211812: (5.326)(4.05); Round each factor to one nonzero digit.
Click here to see answer by rfer(16322)

Question 211850: solve the equation in the complex number system:
x squared + 12x + 72 = 0
Click here to see answer by RAY100(1637)

Question 211865: solve: x squared - 4x - 13 = 0 using the quadratic formula
Click here to see answer by checkley77(12844)

Question 212290: (5+4i)+(3-5i)
Click here to see answer by Alan3354(69443)

Question 212480: solve the expressions (2-i)^3 in form of a+bi
Click here to see answer by stanbon(75887)

Question 212480: solve the expressions (2-i)^3 in form of a+bi
Click here to see answer by drj(1380)

Question 212844: ie^i0
Click here to see answer by stanbon(75887)

Question 212740:
Click here to see answer by rapaljer(4671)

Question 212977: (1/7-i)^2
Click here to see answer by Earlsdon(6294)

Question 213284: (ab+b^2/4ab^5)/(a+b/6ab^2b^4)
Please help!!!!
Click here to see answer by Alan3354(69443)

Question 213439: The waterbeds Myron sells have an average size of 22.5 cubic feet. One cubic foot of water weighs 62.4 pounds. What is the weight of one waterbed?

Click here to see answer by rapaljer(4671)

Question 213433: Select the correct upper limit, lower limit, and the range of tolerance for the measurement listed.
4.75 � 0.05

Click here to see answer by rapaljer(4671)

Question 213472: I need help solving 2+(x+ 9y)i=x+56i :Find the values of x and y, where x and y are real numbers.

Click here to see answer by rapaljer(4671)

Question 213542: Hi, if there's any one who knows how to solve this problem i'd appreciate it, explaining how to find the solution to the problem is far more important then that actaul anwser.
I'm not sure what symbol i can type for Radical Numbers so i'll use R to represent a Radical Number.
6R3 + 8R3 - 16R3 = ?
Find Simplest Form.
The Radical number is listed after the "R" Thank you!
Click here to see answer by rapaljer(4671)

Question 214135: what is 3 sevenths of one third + one quarter
Click here to see answer by thinkingeye(11)

Question 214135: what is 3 sevenths of one third + one quarter
Click here to see answer by solver91311(24713)

Question 214405: when y is an odd number in an algebraic equation why does the always equal an even number i worked out the answers to many odd numbers but i still don't understand ?
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