Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 777626: simplify -3^-2
Click here to see answer by tommyt3rd(5050)

Question 772160: How would I solve the equation e=rx?
Click here to see answer by tommyt3rd(5050)

Question 779009: Please help me solve, step by step this equation:
5i(8-7i)
Click here to see answer by jim_thompson5910(35256)

Question 779009: Please help me solve, step by step this equation:
5i(8-7i)
Click here to see answer by Alan3354(69443)

Question 779021: Please solve this equation step by step:
x^2+10x+34=0
Click here to see answer by waynest(281)

Question 779018: Please help me solve, step by step this equation:
x^2+x+1=0
Click here to see answer by josgarithmetic(39613)

Question 779011: Please help me solve, step by step this equation:
(12+5i)(5i-12) <- and this whole equation has a square root over it
Click here to see answer by psbhowmick(878)

Question 779510: negative four minus the square root of negative 18,
all over 36
Click here to see answer by josgarithmetic(39613)

Question 779705: i'm still unclear on real numbers,complex numbers,pure imaginary, and nonreal complex. Can you help define these and on one problem i had to answer what each problem is one or more of the above terms and i'm stuck on 13i i said it was a complex number even though it isn't set up in the form a+bi so can you help explain how to solve that.
Click here to see answer by psbhowmick(878)

Question 781065: Would the square root of -25 be +/- 5i or just 5i? And why?
Click here to see answer by rothauserc(4718)

Question 781199: Hello there, I was wondering if anybody could help me solve this equation??
-6<2x-4<12
Please get back to me as soon as possible. Thank you
Click here to see answer by Alan3354(69443)

Question 781249: 4-x=|2-3x|
Click here to see answer by DrBeeee(684)

Question 781579: how do i factor 12x^2-2x-30?
Click here to see answer by stanbon(75887)

Question 781579: how do i factor 12x^2-2x-30?
Click here to see answer by josgarithmetic(39613)

Question 781518: use digits to write: six thousand and eight hundred thirty-three ten-thousandths
Click here to see answer by rfer(16322)

Question 781523: (-1+8i)(3+i)
Click here to see answer by tommyt3rd(5050)

Question 781799: Hello!
I am stuck! I am to find all the solutions in the complex number set of Z^5=-32
It has a real solution of -2 but also has 4 complex solutions.
so using the euler equation I came up with
z= |z|cos5θ + isin5θ
so -2 = 2 cos5θ + isin5θ
I'm not sure how to get the solutions from this equation. I know it's easy to see if graphed, but I cannot figure out where to start.
thanks
Click here to see answer by Alan3354(69443)

Question 782311: Write the complex number in standard form.
4 − sqrt(−50)

Click here to see answer by jim_thompson5910(35256)

Question 782553: how many liters of water should be added to 5 L of a 60% salt solution to produce a solution that is no less than 30% salt and no more than 40% salt?
Click here to see answer by josgarithmetic(39613)

Question 782929: Hi I do not understand on how to do these two problems: I have to solve for x
1.) 2*sqrt x = x-8
2.) sqrt 2x+5 = 2* sqrt 2x+1
Click here to see answer by solver91311(24713)

Question 783098: express the complex number in the form of a + bi.
i^17
Click here to see answer by Alan3354(69443)

Question 783606: g(x)= 4x^2-3x+1

Click here to see answer by jim_thompson5910(35256)

Question 783646: what is 358*56

Click here to see answer by Alan3354(69443)

Question 783916: x+y=z if x*y=2679 and x-y=10. find z
Click here to see answer by xinxin(76)

Question 787540: Rewrite without i in the denominator 11/4+5i
Click here to see answer by stanbon(75887)

Question 788652: I am having no luck on figuring out 9/7i in standard form! PLEASE HELP!
Click here to see answer by jim_thompson5910(35256)

Question 789872: simplify (2 - sqrt of -8)sqrd. write the answer in standard for a+bi
Click here to see answer by stanbon(75887)

Question 789967: What are imaginary numbers
Click here to see answer by solver91311(24713)

Question 792208: (a) Find (1-i)^2, and show that (1-i)^3=-2-2i
Click here to see answer by Alan3354(69443)

Question 794135: x^3+125
Click here to see answer by Alan3354(69443)

Question 793447: Solve for R in the formula IR-Ir=E

Click here to see answer by tommyt3rd(5050)

Question 779929: How would i simplify 2 2/3 - n = 1 1/4
Click here to see answer by tommyt3rd(5050)

Question 781832: If z=6-3i, write the expression in standard form a^2+b^2
Click here to see answer by tommyt3rd(5050)

Question 786092: Find the values of x and y, where x and y are real numbers.
5+(x+3 y)i=x+2i
Click here to see answer by tommyt3rd(5050)

Question 780978: 1 2 3
2 5 7
3 1 2
Click here to see answer by tommyt3rd(5050)

Question 785973: 8+9i is a solution of a quadratic equation with real coefficients. Find the other solution.
Click here to see answer by tommyt3rd(5050)

Question 783594: Find each quotient 82�2=
Click here to see answer by tommyt3rd(5050)

Question 796342: Find the multiplicating inverse of 3+5i/2-3i
Click here to see answer by solver91311(24713)

Question 779517: how to solve the problem -3[(x-2)+5(x-2)]

Click here to see answer by tommyt3rd(5050)

Question 785975: Solve in the complex number system.
x^4=16
Click here to see answer by tommyt3rd(5050)

Question 786514: Find the product of the complex number and its conjugate.
1 + 2i
Click here to see answer by tommyt3rd(5050)

Question 785380: 5i(4-5i)
Click here to see answer by tommyt3rd(5050)

Question 783843: construct a polynomial with a degree 4 with a leading coefficient -3 and zeros (2+3i) and (1-4i)
Click here to see answer by tommyt3rd(5050)

Question 784142: (-1+3i)^2
Click here to see answer by tommyt3rd(5050)

Question 796772: what is the slope for the following equation?
3x + 2y = 3/2
Click here to see answer by solver91311(24713)

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