Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 984379: Please help me to divide complex numbers: 6/2+5i
Click here to see answer by Alan3354(69443)

Question 984439: X^4+4x^3+6x^2+4x+9 find the value of this question if x=√-2-1
Click here to see answer by ikleyn(52754)

Question 984502: please help me solve subtract -18-(-9)
Click here to see answer by Boreal(15235)

Question 984502: please help me solve subtract -18-(-9)
Click here to see answer by Cromlix(4381)

Question 984718: I need help proving that
Can you please help.
Click here to see answer by Alan3354(69443)

Question 984944: what is argand diagram
Click here to see answer by MathLover1(20849)

Question 984931: Polar representation of z= cos a-isina
Where 0
Click here to see answer by ikleyn(52754)

Question 985131: 4-8i/4i
Click here to see answer by ikleyn(52754)

Question 985167: After tina has eaten 23% of a box of candies 154 candies are left (a)what percentage of the candies is left？(b)what is the original number of candies
Click here to see answer by srinivas.g(540)

Question 985178: If we sell a wallet at 30% off it is $72 cheaper than we sell it at 10% off what is the marked price of the wallet
Click here to see answer by prabhat.mses(2)

Question 985196: Ken scored 55 marks in his mathematics test. His score in the English test was 20% higher than that in the mathematics test, and his score in the Chinese test was 50% higher than than in the English test. What was Ken's score in the Chinese test?
Click here to see answer by macston(5194)

Question 985294: What is [math]17+18+19+\cdots+42+43[/math] ?

Click here to see answer by swincher4391(1107)

Question 985431: What is 3+2i/2-4i
Click here to see answer by Alan3354(69443)

Question 985487: All the products in a shop are on sale at a 20% discount if a customer is a member of the shop then the customer can get an additional 10% discount on the new selling price susan is a member of the shop and wants to buy a product with a marked price of 250 how much should susan pay？
Click here to see answer by Boreal(15235)

Question 985290: If [math]x=10[/math], then what is the value of
[math]x \cdot x+(-x)(-x)[/math] ?

Click here to see answer by solver91311(24713)

Question 985816: what is the quotient in standard form.
4/3-i
Click here to see answer by MathLover1(20849)

Question 985763: -8+4i/3-3i how do you put this in standard form

Click here to see answer by josgarithmetic(39613)

Question 985763: -8+4i/3-3i how do you put this in standard form

Click here to see answer by MathTherapy(10549)

Question 985815: After tina has eaten 23% of a box of candies,154 candies are left.(a)what percentage of the candies is left？(b)what is the original number of candies？
Click here to see answer by solver91311(24713)

Question 985886: Rhinoviruses, which are the leading cause of the common cold, have a diameter of 20 nanometers(20 � 10−9meter). Pneumococcus, a bacterium causing pneumonia, measures about 1 micron(10−6meter) in diameter. How many times as large in diameter as the virus is the bacterium?
Click here to see answer by Alan3354(69443)

Question 985885: 3.) Some high school students want to collect a million pennies for charity. How many dollars is that?
Click here to see answer by Alan3354(69443)

Question 985914: 1+W+w2=?
Click here to see answer by Alan3354(69443)

Question 986069: How would I use DeMoiver's Theorem to find 2 square roots of 16(cos330 + j sin330)in polar form?
Click here to see answer by ikleyn(52754)

Question 986114: If z is a complex number then minimum value of |z| +|z+1| is??
Click here to see answer by stanbon(75887)

Question 985817: The marked prices of a television model in shop a and b are $5400 and $4800respectively .shop a offers a 20% discount on the model.if shop b wants to have the same selling price as shop a,what discoount should it offer

Click here to see answer by macston(5194)

Question 986235: What is the answer for: (14+5i)/(3+2i)
Click here to see answer by Alan3354(69443)

Question 986690: (a+b)3cube i have an answer but i dont know how to find it please explain how you found it
Click here to see answer by josgarithmetic(39613)

Question 986708: Write z=(i^4) in a+bi form
or
Write z=(i^41) in a+bi form
Click here to see answer by Alan3354(69443)

Question 986688: if (x+iy)^3=y+vi then show that y/x+v/y=4(x^2-y^2)
Click here to see answer by josgarithmetic(39613)

Question 987108: Please factorise using complex numbers
x^2+1
Click here to see answer by ikleyn(52754)

Question 987109: Can you please explain the difference between and sqrt
Why are the answers supposed to be different? I got -/i for both.
Thanks!
Click here to see answer by josgarithmetic(39613)

Question 987127: When z = (1+i)/(1-i), prove that z+z�+z�+z⁴=0
Click here to see answer by Edwin McCravy(20054)

Question 987497: im having trouble put this problem in stander form
-20+√-75
--------
40
Click here to see answer by Alan3354(69443)

Question 987497: im having trouble put this problem in stander form
-20+√-75
--------
40
Click here to see answer by josgarithmetic(39613)

Question 988095: x=5/6;y=3/5

Click here to see answer by Alan3354(69443)

Question 988254: Find z such that |z| = 2 and Arg z =
Please answer this
Click here to see answer by Edwin McCravy(20054)

Question 988278: Please provide all the steps, on how to get the answer please.
(2-3i)(1-i)-(3-i)(3+i)
Click here to see answer by Fombitz(32388)

Question 988241: Let x→-3/2
1/2x+3
Click here to see answer by EdenWolf(517)

Question 988540: Write without absolute value symbols.(Simplify your answer completely.)
|7 + 24i|
Click here to see answer by josgarithmetic(39613)

Question 988542: Solve the following quadratic equation by the quadratic formula. Simplify the solutions and write them in a + bi form. Answers in comma-separated list.
X square + 2x + 5 =0
Click here to see answer by macston(5194)

Question 988804: If maple granola cost $2.00 more than Apple granola. And there is 6 bags of maple and 5 bags of Apple granola equaling $56.00. What is the expression of the cost of 5 bags of Apple gronola
Click here to see answer by josgarithmetic(39613)

Question 989108: 4^c=16
then c=?
Click here to see answer by Alan3354(69443)

Question 989207: Divide and express the results in standard form. Type answer in the form a plus bi
6i divided by 4 minus 7i
Click here to see answer by josgarithmetic(39613)

Question 989426: Use complex numbers to factor 5x^2+35 completely.
Thank You!!
Click here to see answer by thesvw(77)

Question 989581: solve this equation x^2-2x+5=0 in the complex number system.
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