Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 385138: if f(x)=x-3 divided by 2 then f(1 divided by 4) is equal to
Click here to see answer by rfer(16322)

Question 385137: if f(x)=x-3 divided by 2 then f(1 divided by 4) is equal to
Click here to see answer by mananth(16946)

Question 385233: Have I done this correctly?
2i/3-8i
mult. top and bottom by 3+8i
now 6+16i/9-64i^2
for 6/-55 , 16/-55i

Click here to see answer by stanbon(75887)

Question 385922: the measure of the supplement of an angle is 26 degrees more the 7 times the measure of an angle . to the nearest hundredth what is the measure of the angle
Click here to see answer by richard1234(7193)

Question 386387: im really confused when it comes to complex numbers
this is one of the questions
(3-2i)x+3=(4+3i)x-4i
so my teacher showed us to distribute then to get the x's on one side and the non x's so i've got
-1x-ix=-4i-3
i would then multiply by a zero to get
x+ix=4i-3
after that im completly lost
Click here to see answer by solver91311(24713)

Question 386558: Let x and y be real numbers. If (x+yi) - (2-3i) = -6+4i, what are the values of x and y?
a) x=8, y=7
b) x=8, y=1
c) x=-4, y=7
d) x=-4, y=1
Click here to see answer by sudhanshu_kmr(1152)

Question 386564: Solve for x: (x-1)/(x+5) = x/(2(x+5))
Click here to see answer by ewatrrr(24785)

Question 386622: it says perform the indicated operation, and write the result in the standard form a+bi. the equation is 2+3i/1-5i. i have no clue what to do

Click here to see answer by ptaylor(2198)

Question 387308: We're currently working on factoring polynomials, solving equations by completing squares and writing expressions as a complex number in standard form. I'm having the most trouble with writing expressions as a complex number in standard form. Currently I need help with
x^2-6x+25=0
Thank you so much for your help!
Click here to see answer by jim_thompson5910(35256)

Question 387343: Evaluate i^(-i) and sketch
Click here to see answer by stanbon(75887)

Question 387372: 9+i divided by 1-5i
Click here to see answer by scott8148(6628)

Question 387554: Find real numbers a and b such that:
a+ib=4 (i as in imaginary)
Click here to see answer by Jk22(389)

Question 387560: Find real numbers a and b such that:
(a+2i)(1+bi)=17-19i
(i as in imaginary)
Thank you :D
Click here to see answer by Jk22(389)

Question 387583: 12c + 12 > 48c
Click here to see answer by rfer(16322)

Question 388203: simplify the complex fraction
((6x-24y)/10)/((x-4y)/5x)
Click here to see answer by robertb(5830)

Question 388541: Factor 4x^2-28x+48 pleaseeeeee
Click here to see answer by solver91311(24713)

Question 388541: Factor 4x^2-28x+48 pleaseeeeee
Click here to see answer by jim_thompson5910(35256)

Question 388755: What does the word Binomial mean?
Click here to see answer by edjones(8007)

Question 388773: Solve by completing the square: x^2-4x+6=0
I did x^2-4x+4=-6+4
(x-2)^2=-2
x-2=�√-2

Am I doing it right?
Click here to see answer by jim_thompson5910(35256)

Question 388773: Solve by completing the square: x^2-4x+6=0
I did x^2-4x+4=-6+4
(x-2)^2=-2
x-2=�√-2

Am I doing it right?
Click here to see answer by lwsshak3(11628)

Question 388962: how do you find the absolute value of this complex number: 3-6i
Click here to see answer by stanbon(75887)

Question 389053: Perform the indicated operation.
2i/4-3i
Click here to see answer by Fombitz(32388)

Question 389094: find the solution set in a+bi form: 5x^2+3x+1=0
Click here to see answer by Fombitz(32388)

Question 389056: Find the solution set of 18 - |2y-6| > 45
Find the values of k so that the line Y = KX + 10 will form a triangle of area 60 with the coordinate axis. Give your answers in simplified fraction form.
The female born in the later part of 20th century will be x years old in the year x squared. In what year was she born? (x is in integers)
Click here to see answer by stanbon(75887)

Question 389235: Each of the numbers 1,2,3,4...12 is to be placed in one of the circles. The sum of the entries along each side of the square equals to 22. determine the sum of the numbers that appear in the four corner circles.
Note: I could not draw a picture. there are 12 circles arranged in the form of square shaped figure.
Click here to see answer by richard1234(7193)

Question 389416: how do i solve the equation: -3u=u(squared)
Click here to see answer by Earlsdon(6294)

Question 389424: A parabola of the form y=2x squared+bx+c has complex roots of -1plus/minus 4i. Find the values of b and c
Click here to see answer by ewatrrr(24785)

Question 389424: A parabola of the form y=2x squared+bx+c has complex roots of -1plus/minus 4i. Find the values of b and c
Click here to see answer by CharlesG2(834)

Question 389436: HOW TO DETERMINE i2=−1 FROM THE EULER`S EQUATION USING LOGARITHM/WITHOUT LOGARITHM? PLEASE TELL ME IN DETAILS.
Click here to see answer by richard1234(7193)

Question 389436: HOW TO DETERMINE i2=−1 FROM THE EULER`S EQUATION USING LOGARITHM/WITHOUT LOGARITHM? PLEASE TELL ME IN DETAILS.
Click here to see answer by Edwin McCravy(20056)

Question 389426: If a quadratic has two roots that are rational and unequal then its discriminant could be:
1. 16 3. 10
2. -12 4. 0
Click here to see answer by Fombitz(32388)

Question 389454: simplify.
(1-2i)^2 - (2-3i)^2
Click here to see answer by richard1234(7193)

Question 389453: find and name the domain. then solve
x-2/x-4 = 8/x^2-4x
Click here to see answer by Fombitz(32388)

Question 389503: What is an equivalent form of 2/3+i?
Click here to see answer by MathLover1(20850)

Question 389533: if the end two digits of 4186 were interchanged, the number would be made:
a. smaller by 1990
b. larger by 1998
c. smaller by 1998
d. larger by 1990
what will be the answer and why, please proivde the explaination. Thanks
Click here to see answer by rfer(16322)

Question 389448: Use Demoivre's Theorem to find the indicated power of the complex number: 4-4 (Squareroot of 3)*i all raised to the power of 5
Click here to see answer by robertb(5830)

Question 389452: 5/3x + 2/x^2 = 7/9
find and name the domain then solve
Click here to see answer by haileytucki(390)

Question 389652: How do you simplify �√√125y^6?

You have to find the cube root of √125y^6.

Click here to see answer by haileytucki(390)

Question 389783: please help me solve this equation:
5+6i/4-2i
Click here to see answer by jim_thompson5910(35256)

Question 389783: please help me solve this equation:
5+6i/4-2i
Click here to see answer by Alan3354(69443)

Question 389788: please help me simplify this expression
5 square root r times square root rs
Click here to see answer by user_dude2008(1862)

Question 389787: please help me simplify this expression into a+bi form
5+6i/4-2i

Click here to see answer by jim_thompson5910(35256)

Question 389790: what is the domain of the function:
f(x) 3x^2/x^2-49
Click here to see answer by user_dude2008(1862)

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