Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 297528: I'm not sure if this problem belongs in this section but I really need some help.
g(x) = x^4 + 2x^3 � 3. I'd really appreciate any help!

Click here to see answer by richwmiller(17219)

Question 297815: How do you solve -i to the 15th power?

Click here to see answer by Alan3354(69443)

Question 297843: How do you simplify -i^15
Thanks for any help you can give me.
Click here to see answer by user_dude2008(1862)

Question 298179: solve in simplest form: 2x^(2)+4x=-10
im lost on this one.. i thought you should add the -10 to the other side making it 2x^2+4x+10=0... then divide by 2 and it equals x^2+2x+5=0.. but since it doesnt fully factor then I get lost and unsure of what to do
Click here to see answer by richwmiller(17219)

Question 298745: how to solve this problem (7-4i)-(3+i)step by step

Click here to see answer by user_dude2008(1862)

Question 299034: I need help solving and simplifying this complex fraction. I didn't see and actual spot for complex fractions though. I apologize if I picked the wrong one.
1 divided by x minus x to the negative power of 1
Click here to see answer by ankor@dixie-net.com(22740)

Question 299295: If steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks? Please, give me the explaination.
Click here to see answer by Earlsdon(6294)

Question 300127: 9-6i
_____
7+8i
Click here to see answer by ankor@dixie-net.com(22740)

Question 300613: reciprocal of -i
Click here to see answer by jim_thompson5910(35256)

Question 300631: What is the solution to 3n^2+48=0
Click here to see answer by jim_thompson5910(35256)

Question 300834: I am looking for a general solution to a complex number raised to a complex power. I recall that Euler had a solution, but I can't recall what it was. However, it was in the form of (something here) + i (something here), and used logarithms heavily (as is an Euler trademark). Any help will be greatly appreciated. Thanks.
Click here to see answer by solver91311(24713)

Question 300860: 2/7-8i
Click here to see answer by Fombitz(32388)

Question 301155: I am taking a trig refresher course and need help remembering how to factor a polynomial of a higher degree. I am supposed to find all the zeros of the function. The formula is Any help in how to factor would be appreciated. Thanks
Click here to see answer by Alan3354(69443)

Question 301200: Which of these is the cube root of 1?
1/2- i sqrt3/2
1/2+ i sqrt3/2
-1/2 + i sqrt3/2
1- i sqrt3
1+ i sqrt3

Click here to see answer by Alan3354(69443)

Question 301304: what is the conjugate of 3x+6i?
Click here to see answer by math_goutam_jhargram(2)

Question 301340: solve for u
3/u = -6
Click here to see answer by Alan3354(69443)

Question 301334: simplify as much as possible
y/ y + y/ 1+3 /y +1
Click here to see answer by Edwin McCravy(20054)

Question 301338: simplify
y^2 +5y +6 / 2y^2 +4y -6
Click here to see answer by Fombitz(32388)

Question 301341: solve the following equation. simplify your answer as much as possible
1/ w-8 = -6
Click here to see answer by Fombitz(32388)

Question 301346: Susan runs 3 miles in 30 minutes. At the same rate, how many miles would she run in 66 minutes?

Click here to see answer by checkley77(12844)

Question 301345: solve the folowing proportion for z
-15 /z = -30 /z -5
Click here to see answer by checkley77(12844)

Question 301344: solve the following proportion for y
11/ 7 = y /5
Click here to see answer by checkley77(12844)

Question 301620: What is th value of
1+i+i^2+i^3+i^4+i^5+i^6+i^7+i^8+i^9+i^10+i^11+i^12+i^13+i^14+i^15+i^16+i^17+i^18+i^19+i^20
Click here to see answer by Fombitz(32388)

Question 301705: Where do i find a decent worksheet about complex numbers that i don't have to pay for? I need one for Algebra 2 cause im teaching the class next week.
Click here to see answer by Fombitz(32388)

Question 301996: Divide and Simplify
10a^9 then divide by 9a^4
2 then divide by 6
10a^9 divide 9a^4
----- divide-----
2 divide 6
I sure hope you understand what I am trying to say.
Click here to see answer by london maths tutor(243)

Question 301998: divide and simplify
y^3 + 9y divided by y^2 + 2y - 35
----------------------------------
y^2 - 81 divided by y^2 - 14y + 45
I am not sure how to type this but it is suppose to look like a division problem with a line between in the middle.
Click here to see answer by london maths tutor(243)

Question 302001: simplify

x^2 - 8x plus 7x - 42
---------------divide----------
x^2 + 12x + 36 plus x^2 +12x +36
Click here to see answer by london maths tutor(243)

Question 302098: MULTIPLY & SIMPLIFY:::
x^2 + 49 multiply x + 3
It is suppose to look like a division problem.
Click here to see answer by richwmiller(17219)

Question 302095: SIMPLIFY:
4a + 10 subtract 3a + 7
--------subtract--------
a - 1 subtract a - 1
Click here to see answer by richwmiller(17219)

Question 302205: Find the cube roots of 2 + i 2 . Locate them graphically
Click here to see answer by Alan3354(69443)

Question 302205: Find the cube roots of 2 + i 2 . Locate them graphically
Click here to see answer by stanbon(75887)

Question 302818: add or subtract (3+10i)+(-4+2i)
Click here to see answer by tazxoxo(7)

Question 303200: i2 +i
Click here to see answer by nyc_function(2741)

Question 303258: Simplify if possible.
4a+10/a-1 Devide 3a+7/a-1
Click here to see answer by ankor@dixie-net.com(22740)

Question 303260: Simplify if possible.
z^2+17z+72/z^2+18z+81 Devide z^2+8z/z^2+15z+54
Click here to see answer by london maths tutor(243)

Question 303259: Simplify if possible.
m^2-16/3m Devide m^2/m^2+4m-32
Click here to see answer by london maths tutor(243)

Question 303256: Simplify if possible.
2t^2+20/t^2+6t-7 Devide 13t/t^2+6t-7
Click here to see answer by london maths tutor(243)

Question 303237: List all numbers for which the rational expression is undefined.
x^2-9 / x^2+3x-18
A. -3, 6
B. -6, 3
C. -3, 3
D. 0

Click here to see answer by london maths tutor(243)

Question 303237: List all numbers for which the rational expression is undefined.
x^2-9 / x^2+3x-18
A. -3, 6
B. -6, 3
C. -3, 3
D. 0

Click here to see answer by Fombitz(32388)

Question 303828: what is the standard form of the expression 2-5i/4+2i? and i need to know how to work it out
Click here to see answer by jim_thompson5910(35256)

Question 303913: Multiply. Please leave answer in factored form
x^2+5x+4/x^2-6x+8 TIMES x^2+5x-14/x^2+8x-17
Thank YOU
Click here to see answer by richwmiller(17219)

Question 303919: Subtract and if possible,simplify.

Click here to see answer by JBarnum(2146)

Question 303937: Mutliply. Please leave answer in factored form.

Click here to see answer by richwmiller(17219)

Question 303938: Mutiply, and simplify if possible.
m^2-16/3m TIMES m^2/x^2+4m-32
Click here to see answer by Sojeda haroon(2)

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