Questions on Algebra: Complex Numbers answered by real tutors!

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Question 617828: rewrite the expression so that it is an addition problem.
(3-8i)-(6+2i)
Click here to see answer by jim_thompson5910(35256)

Question 618091: How do you write (3+5i)(2+i) as a complex number in standard form?
Click here to see answer by vleith(2983)

Question 618434: The question asks to write the following term into a + ib form, where �i� is a complex number :

Click here to see answer by ewatrrr(24785)

Question 618435: The question asks to write the following term into a + ib form, where �i� is a complex number :

Click here to see answer by josmiceli(19441)

Question 618690: The question asks to write the following term into a + ib form, where �i� is a
complex number :

I need to show steps but having trouble getting started. Can anyone help?
Thanks.
Click here to see answer by Alan3354(69443)

Question 618772: Convert the Polar form (2,-pie/6) to a complex number in the form a+ib.
Click here to see answer by scott8148(6628)

Question 618814: (8 - 3i) - (17 - 7i)
Click here to see answer by rfer(16322)

Question 618909: Find the least common denominator? How would you do this?
5 over 2(x+1), 1 over 2x, 3 over 2(x+1)^2
Click here to see answer by Maths68(1474)

Question 618908: Find the least common denominator? How would you do this?
x over x^2+x-2, 1 over x+2

Click here to see answer by Maths68(1474)

Question 618906: How would you perform the indicated operation and simplify?
(2x over x-3) - (1 over x-3)
Click here to see answer by Maths68(1474)

Question 618905: How would you perform the indicated operation and simplify?
(5 over x+1) + (x over x+1)
Click here to see answer by Maths68(1474)

Question 618900: How do you perform the indicated operation and simplify?
5 over x + 2 over 3x^2
Click here to see answer by Maths68(1474)

Question 618986: The question asks to write the following term into a + ib form, where �i� is a
complex number :

Any help would be greatly appreciated. Thanks.
Click here to see answer by Alan3354(69443)

Question 619026: x^2+8x+20=0
i dont know if these are complex numbers but the problem says solve the equation in the complex number system
Click here to see answer by solver91311(24713)

Question 619152: Is there a way to prove that without using Taylor series?
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Question 620423: (-7+i)(-7-i)
Click here to see answer by ewatrrr(24785)

Question 620423: (-7+i)(-7-i)
Click here to see answer by josmiceli(19441)

Question 620382: I am needing to find all solutions of the equation. Equation is:4t^2/3+12t^1/3+9=0

Click here to see answer by lynnlo(4176)

Question 620586: Perform the indicated operation, simplify, and express in standard form.
6(9-8i)=
Click here to see answer by rfer(16322)

Question 620587: Perform the indicated operation, simplify, and express in standard form.
(7-i) (3+2i)
Click here to see answer by ankor@dixie-net.com(22740)

Question 621290: Plot the complex number, then write complex number in Polar form you may express the argument in degrees.
4-4(sqrt(3)i)
Click here to see answer by josmiceli(19441)

Question 621701:
Click here to see answer by ewatrrr(24785)

Question 621654: Divide (3 + 4i) by (5 - 2i).
Click here to see answer by lynnlo(4176)

Question 621755: What is the expression in factored form?
x2 + 14x + 48

Click here to see answer by unlockmath(1688)

Question 621745: What value completes the square for the expression?
x2 - 18x

Click here to see answer by ewatrrr(24785)

Question 621754: Simplify the expression.
(3 + i) - (2 - 2i)
Click here to see answer by Alan3354(69443)

Question 621747: Solve the equation.
x2 + 18x + 81 = 25

Click here to see answer by solver91311(24713)

Question 621746: You live near a bridge that goes over a river. The underneath side of the bridge is an arch that can be modeled with the function y = -0.000495x^2 + 0.619x where x and y are in feet. How high above the river is the bridge (the top of the arch)? How long is the section of bridge above the arch?
Click here to see answer by Alan3354(69443)

Question 621813: i need to find the stationary points of the function
f(x) = -x^3 -12x^2 -36x -11
Click here to see answer by Alan3354(69443)

Question 622087: Which sum is equal to x^2 + 6x - 5/x^2 - 25
A. 1/x + 5 + x/x - 5
B. 1/x + 5 + x^2/x -5
C. 1/x -5 + x/x + 5
Click here to see answer by jim_thompson5910(35256)

Question 622083: What is the equation, in standard form, of a parabola that models the values in the table?
x -2 0 4
f(x) -7 3 -73
Click here to see answer by ewatrrr(24785)

Question 622411: Please help me find the zero of f(x)=4x+2/3
Click here to see answer by solver91311(24713)

Question 622618: the steps to factor : 8n^6-98r^6
Click here to see answer by lynnlo(4176)

Question 623356: hi. I need help on this question.

Consider the points A(54−2), B(−15−2) and C(243). Find the largest distance between any pair of these points. Enter the square of the distance as your answer.
Click here to see answer by Alan3354(69443)

Question 623637: simplify the following 3/5+7/3+(-13/15)+2/5+(-2/3)
Click here to see answer by fcabanski(1391)

Question 623816: 5-i/6+3i
Click here to see answer by Theo(13342)

Question 623969: is there any number greater then complex number ? pls help me

Click here to see answer by Theo(13342)

Question 624328: .
Write the expression as a complex number: (12 - 8i) - (6 - 6i
Click here to see answer by rfer(16322)

Question 625233: Multiply (2- sqrt(-3))(4+2i)
Click here to see answer by josmiceli(19441)

Question 625366: (3/x^2+x)-(x+4/x^2+2x+1)
Click here to see answer by reynard2007(52)

Question 625710: 2(3-2i)+5(1+i) please help
Click here to see answer by Alan3354(69443)

Question 625710: 2(3-2i)+5(1+i) please help
Click here to see answer by oscargut(2103)

Question 626538: what is the squareroot of x divided by 7y?
Click here to see answer by stanbon(75887)

Question 626566: Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour and your city is the first stop on the tour. You need to supply information about projected ticket sales to the box office manager. The box office manager uses this information to anticipate staffing needs until the tickets sell out. You provide the manager with a quadratic equation that models the expected number of ticket sales for each day x. (x=1 is the day tickets go on sale).

Does the graph of this equation open up or down? How did you determine this?

As time passes, explain how the tickets sales change. Will ticket sales peak or be at a low during the middle of the time period they are on sale? How do you know?

After how many days will the peak or low occur? How many tickets will be sold on the day when the peak or low occurs? Explain how you arrived at your answer.

How many solutions are there to the equation ? (Do not solve the equation in this step.) Explain how you arrived at your answer.

Use the quadratic formula to solve the quadratic equation in part d. Write the answer in decimal form and round to the nearest whole number. Is there a solution that does not make sense? If so, in what way does the solution not make sense?

When should you expect to stop selling tickets for this musical? Explain how you arrived at your answer.

Click here to see answer by stanbon(75887)

Question 626561: find the following quotient and express the answer in the standard form of a complex number. -3+8i/-1+i
Click here to see answer by stanbon(75887)

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