Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 989586: solve equation in the complex number system x^4=1
Click here to see answer by Alan3354(69443)

Question 989586: solve equation in the complex number system x^4=1
Click here to see answer by Edwin McCravy(20054)

Question 989588: write expression 4i^3-2i^2+1 in standard form a+bi
Click here to see answer by jim_thompson5910(35256)

Question 989585: express answer of square root of -64 in the form a+bi
Click here to see answer by jim_thompson5910(35256)

Question 989674: Simplify i^-17
Click here to see answer by Alan3354(69443)

Question 989679: How 1/i becomes i/(-1)?
Click here to see answer by josgarithmetic(39613)

Question 989679: How 1/i becomes i/(-1)?
Click here to see answer by jim_thompson5910(35256)

Question 989679: How 1/i becomes i/(-1)?
Click here to see answer by MathTherapy(10549)

Question 989973: I keep getting 0 as my answer for this problem, but the answer key says 1/2. Any help would be greatly appreciated!!
Problem: Limit as x is approaching 0 of { {sqrt ( 1+x ) -1 } / ( x ) }
Click here to see answer by ikleyn(52750)

Question 990079: Can I please know what's 6-11=z�-4

Click here to see answer by Timnewman(323)

Question 990373: ( )+( )+( )=30
Fill the ( ) use this (1,3,5,7,9,11,13,15)
Click here to see answer by farohw(175)

Question 990393: (3-2i)(1+i) + |3+4i|.
Turn this into a+bi form
Click here to see answer by ikleyn(52750)

Question 991020: find all seventh root of 3+4i
Click here to see answer by ikleyn(52750)

Question 991554: how many gram of raisin worth php 20 per gram must be mixed with 12 grams of peanuts worth php 18 per gram produce a mixture worth php 19.25 per gram?
Click here to see answer by josmiceli(19441)

Question 991612: I was given two solutions "-i, i" and I have to write an equation where the solution would be -i and i
Click here to see answer by ikleyn(52750)

Question 991612: I was given two solutions "-i, i" and I have to write an equation where the solution would be -i and i
Click here to see answer by josgarithmetic(39613)

Question 992076: What is the vertex of the graph of y = -|4x + 8| + 3?
Click here to see answer by solver91311(24713)

Question 992286: Find all real or imaginary solutions for the following equation:
(1/x) + 1/(x-1) = (3/2)
I have really been struggling with using imaginaries and fractions. Help is greatly appreciated.
Thank you!
Click here to see answer by satyareddy22(84)

Question 992366: How do you solve the problem 3x^2-15x-7=0 using complete the square?
Click here to see answer by MathLover1(20849)

Question 992396: Write the complex number in standard form.
7 + −16

Click here to see answer by solver91311(24713)

Question 992802: 1. Find the prime factorization of the Following number prime factorization of 132 is
2. Which the fraction is simplest form 15xy�12yy=
3. -55�65y

Click here to see answer by Fombitz(32388)

Question 993706: Find the real numbers x and y that make the equation true.
-4 + yi = x + 3i

Click here to see answer by Alan3354(69443)

Question 994366: Use the formula (a+b)(a-b) = a2-b2 to complete 99x101
Click here to see answer by Alan3354(69443)

Question 994462: I need to find the value of a and b. Could you please solve this with each step thank you so much. (a/(x+3))-(b/(x+2))=(3x-2)/((x+3)(x+2))
Click here to see answer by MathLover1(20849)

Question 994688: gemma's mean speed on her drive home from cincinnati is 49 mph. if the total trip
Click here to see answer by Alan3354(69443)

Question 994714: two numbers have a difference of 24. find the numbers if the result of adding their sum to their product is a minimum
Click here to see answer by Alan3354(69443)

Question 994726: Write the complex number 45 in standard form.
Click here to see answer by josmiceli(19441)

Question 994772: solve by elimination

2x+3y=8
x-2y=-3
Click here to see answer by MathLover1(20849)

Question 995192: √-2√2+√-4i-2i^6+√-2i^2
Click here to see answer by Alan3354(69443)

Question 995488: A restaurant sells 330 sandwiches each day. For each $0.25 decrease in price, the restaurant sells about 15 more sandwiches. How much should the restaurant charge to maximize daily revenue? What is the maximum daily revenue? (All sandwiches are $6).
Click here to see answer by josmiceli(19441)

Question 995907: conjugate of (3+5i)/(1+2i)
Click here to see answer by stanbon(75887)

Question 996331:
(-1+3i)^2

I am learning how to multiply complex numbers and I have been doing good so far until I hit this problem. I don't know how to work it out and i have to show work to get a grade. Please help and explain.
Thank you so much,
angelbug104@gmail.com
Click here to see answer by solver91311(24713)

Question 996372: Please help me with this problem:
(-2i)(5i)(-i)
I have to show work to get a grade so could you please explain?
Thank you so much,
angelbug104@gmail.com
Click here to see answer by stanbon(75887)

Question 996384: i(1+i)(1-2i)
Click here to see answer by stanbon(75887)

Question 996379: (6-sqrt(-16))+(-4+sqrt(-25))
Please help me solve this. I have to show work also so if you could explain that would be fantastic!
Thank you so much,
angelbug104@gmail.com
Click here to see answer by ikleyn(52750)

Question 996809: how do you work out this problem step by step (7i)^2(6i) and it says use absolute values when appropriate
Click here to see answer by Alan3354(69443)

Question 996807: how do you work out this problem step by step (7i)^2(6i) and it says use absolute values when appropriate
Click here to see answer by stanbon(75887)

Question 996843: x^3-2x^2+4x-8=0: x=2
Click here to see answer by Boreal(15235)

Question 997583: How is Trig supposed to help me with complex numbers and roots? It doesn't make any sense! I can never pass my analytic Geometry class now.
Click here to see answer by Alan3354(69443)

Question 997875: how many litres of 50% alchol solution must be mixed with 90 liters of 80% solution to get a 70% soulton
Click here to see answer by josmiceli(19441)

Question 998225: Find all non-zero complex number z satisfying z^2 + |z*| = 0. Here z* is complex conjugate of z.
Click here to see answer by ikleyn(52750)

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