Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 29686: Please help me solve this equation
(3x-1)(3x-1)+36 = 0
Click here to see answer by ikdeep(226)

Question 29685: 5x(squared) - 2x + 1 = 0
Click here to see answer by sdmmadam@yahoo.com(530)

Question 29852: I am trying to do complex conjugate and modulus numbers but I am unsure of how to do (2+3i)^3
Click here to see answer by Cintchr(481)

Question 29843: how do you find the nth term of a negative complex number?
for example the fourth roots of -4
Click here to see answer by venugopalramana(3286)

Question 29900: What is the value of the discriminant to the graph of y=ax2 + bx + c?
Click here to see answer by Cintchr(481)

Question 30004: Perform the indicated operation. Write the result in the form a + bi
(9 + 7i) - (-4 + i)
Please help...I am having so much trouble with these.
Thank you guys for all your help!!!!!
Click here to see answer by Cintchr(481)

Question 30038: 3x^2 - 2x - 3 = 0
Please help me solve this equation
Click here to see answer by sdmmadam@yahoo.com(530)

Question 30038: 3x^2 - 2x - 3 = 0
Please help me solve this equation
Click here to see answer by AnlytcPhil(1806)

Question 30282: (6+8i)- (-7+i)
I come up with 13+ 9i but I am not sure, can you help?
Click here to see answer by venugopalramana(3286)

Question 28114: solve 5t-26=18t
Click here to see answer by AlgebraGirl08(3)

Question 30690: 5x^2=10x over x^2-x-6 divided by 15x^3+45x^2 over x^2-9
Click here to see answer by sdmmadam@yahoo.com(530)

Question 31295: please help me with this problem.find a quadratic equation with roots (4+i)and (4-i). thank you

Click here to see answer by longjonsilver(2297)

Question 31315: I need to solve for a in the equation V = xyz,
where , , and .
This comes from a real world research problem I am working on, minimizing the area of a rectangle while keeping the volume constant.
Here is the final problem.
we need to get (a) on left side in units of (V) to right side from this:

Thank you for your help!
Click here to see answer by stanbon(75887)

Question 31407: (((sqrt-8 + sqrt-18 - sqrt-32)))
Click here to see answer by benni1013(206)

Question 31417: (((1^12-i^11)))^2
Click here to see answer by stanbon(75887)

Question 31422: (5-4i)^2
Click here to see answer by stanbon(75887)

Question 31468: The arithmetic mean of two numbers x and y is the unmber x+y/2. If x and y are rational numbers, what can you conclude about their arithmetc mean?
The geometric mean of two positive number x and y is the number squared xy. If x and y are positive rational numbers, can you conclude that their geometric mean is also rational? Explain
Click here to see answer by venugopalramana(3286)

Question 31526: Simplify the complex fraction?
1 + 1/x= 30/x2
Click here to see answer by benni1013(206)

Question 31529: Simplify
25x2 - 9y2/xy
-------------- divide by
5/y - 3/x
Click here to see answer by benni1013(206)

Question 31530: 1+ 1 over x = 30 over x squared
Click here to see answer by checkley71(8403)

Question 31553: Can you help me solve x/2+1/15=1/30X
Click here to see answer by checkley71(8403)

Question 31759: If cost varies inversely as the square of the number purchased, and 5 can be purchased for $45, how much would 10 cost?
Click here to see answer by mukhopadhyay(490)

Question 31758: John traveled 135 miles in 4 hours fewer than it took David to travel 945 miles. If the speed of John was three times that of David's, what was the speed of each for how long did each travel?
Click here to see answer by atif.muhammad(135)

Question 31891: The shoe store has twice as many black shoes as it does brown shoes. The total number of shoes is 66. How many brown shoes are there?
Click here to see answer by elima(1433)

Question 31895: If g(x)=x squared + 2x + 1, D = {Reals}, then g(-2)=
Click here to see answer by longjonsilver(2297)

Question 31896: 5+2i divided by -7i+3
Click here to see answer by longjonsilver(2297)

Question 31897: the factorization of 2x squared + 7x - 15
Click here to see answer by mukhopadhyay(490)

Question 31933: Gina is 9 years younger than her sister, Bridgette. Two years ago, Bridgette was twice as old as Gina was. How old is gina now?
Click here to see answer by Paul(988)

Question 32023: Sean earns $4.50 oer hour more than his trainee, Tyrone. During one 8 hour day, they earn a total of $284. How much does Tyrone make per hour?
Click here to see answer by Paul(988)

Question 32034: Find the number that is 3/4 of the way from 3/5 to 2 2/3
Click here to see answer by Fermat(136)

Question 32034: Find the number that is 3/4 of the way from 3/5 to 2 2/3
Click here to see answer by mbarugel(146)

Question 32032: Solve:
3x - y = 4
xy = 7
Click here to see answer by mukhopadhyay(490)

Question 32036: m + 3 divided by m - 3 < or equal to 2, D = {Reals}
Click here to see answer by ikdeep(226)

Question 31894: 3x-y=4
xy=7
Click here to see answer by checkley71(8403)

Question 32021: Joe has 16 baseball cards that football cards. He also noticed that of the total he has three times as many baseball cards as football cards. How many football cards does he have?
Click here to see answer by mukhopadhyay(490)

Question 32209: Hello. I found the division of complex numbers in my book but can't find the multiplication unit in my book. Here is the problem I am trying to work on: Needs to be put in " a+bi " form.
. Any help would be greatly appretiated.
Respectfully,
Chris
Click here to see answer by Earlsdon(6294)

Question 32244: My problem says to solve each equation in the real number system. The problem says 2x^3+3x^2+2x+3=0. I factored the problem by grouping and came out with (2x^2+3)(x^2+1)=0, but when I solve for x I come out with imaginary numbers and I am not supposed to. I would apprecaite any help you could give me in solving this problem. Thanks, Britta
Click here to see answer by venugopalramana(3286)

Question 32470: Hello, tutor!!
I'm in Algebra II right now, and we are currently studdying imaginary/complex numbers. I thought I understood it until I came across this problem...

WHAT IS the square root of -25/121 (Yes, that is a fraction)

Any hint would be awesome!!!
Love, Ari
Click here to see answer by benni1013(206)

Question 32227: 3+i
Click here to see answer by ikdeep(226)

Question 31973: 10 / (3-i2)
(10 divided by 3-i2)
Click here to see answer by mukhopadhyay(490)

Question 32322: The teacher is asking me to simplify this complex fraction.
1
----- +1
a
--------
1
---- -1
a
I am struggling with this problem so any help is appreciated.
Click here to see answer by mukhopadhyay(490)

Question 32623: (7-6i)+(9+11i)
Click here to see answer by venugopalramana(3286)

Question 32705: If g(x) = 2x - 3, D = {Reals}, and h(x) = x squared + 1, D = {Reals}, find:
a) (g + h)(-2)
b) gh(1/2)
Click here to see answer by mukhopadhyay(490)

Question 32746: I've been helping a struggling Algebra 2 student and today he brought home problems about imaginary numbers. I can't remember for the life of me how this works. Here's the problem:
The square root of -36, over the square root of -4.
Click here to see answer by marshalltamika(3)

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