Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 174683: how do you simplify -6+3i divided by 8-9i?
Click here to see answer by stanbon(57222)

Question 174689: how do you find the discriminant of each quadratic equation then state the number and type of solutions of n^2-14n+9=-11n-4-5n^2?
Click here to see answer by jim_thompson5910(28476)

Question 174706: how do you find the discriminant of each quadratic equation then state the number and type of solution of 3r^2+10=-7r-7r^2?
Click here to see answer by Mathtut(3670)

Question 174736: write the expression as a complex number in standord form:
(8-i)-(3+2i)+(-4+6i)
First equate real parts: 8-3 + -4 = 1
and imaginary parts: -i -2i +6i = 3i
So our answer is 1 + 3i
Click here to see answer by Postulio(1)

Question 174740: use the discriminant to determine the number of real solutions of the equation: 3x^2+x-8=0

Click here to see answer by Alan3354(30962)

Question 174739: write the complex number in standard form:
(5-4i)^2
Click here to see answer by Alan3354(30962)

Question 165356: Find the quotient and express the answer in the standard form of a complex number. 2/3i
Click here to see answer by HyperBrain(694)

Question 165356: Find the quotient and express the answer in the standard form of a complex number. 2/3i
Click here to see answer by Alan3354(30962)

Question 175014: write the expression as a complex number in standard form:
(5-4i)^2
Click here to see answer by user_dude2008(1861)

Question 175015: plot the number in a complex plane:
4+2i
Click here to see answer by user_dude2008(1861)

Question 175168: An infinite geometric series has 1 and 1/5 as its first two terms: 1, 1/5, 1/25, 1/125,... what is the sum, S, of the infinite series?
Click here to see answer by jim_thompson5910(28476)

Question 175172: if y=7.2 when x=10, what is the calue of x when y=20? (y caries inversely as the square of x)
Click here to see answer by Mathtut(3670)

Question 175171: how do i determine whether (c+5) is a factor of (c^4+7c^3+6c^2-18c+10)?
Click here to see answer by Alan3354(30962)

Question 175167: if x is inversely proportional to y, and x=60 when y=0.5, how do i find x when y=12?
Click here to see answer by Alan3354(30962)

Question 175160: If y caries incersely as x, and y=12 when x=6, what is K, the cariation constant?
Click here to see answer by Alan3354(30962)

Question 175170: what is the remainder when d^4+2d^2+5d-10 is divided by d+4?
Click here to see answer by stanbon(57222)

Question 175161: how do I determine whether(y-3) is a factor of (y^4+2y^2-4) using the remainder and factor theorem?
Click here to see answer by stanbon(57222)

Question 175169: How do i determine the remainder when 5w^3-2w+10 is divided by w+3?
Click here to see answer by josmiceli(9650)

Question 175165: What is the quotient of b^3+4b^2-3b+126 over b+7?
Click here to see answer by nycsub_teacher(90)

Question 175162: How do i determine whether (b+4) is a factor of (b^3+3b^2-b+12)?
Click here to see answer by Alan3354(30962)

Question 175497: what is the answer with work for
write the expression as a complex number in standard form.
(3+i) + (1-5i)
Click here to see answer by jim_thompson5910(28476)

Question 175556: How do I simplify a complex number that is of Division and Multiplication?
Click here to see answer by EMStelley(187)

Question 175628: Find the absolute value.
1.) |3-i|
2.) |-2+3i|
Click here to see answer by EMStelley(187)

Question 175628: Find the absolute value.
1.) |3-i|
2.) |-2+3i|
Click here to see answer by jim_thompson5910(28476)

Question 175668: u+1/1+1/u
________
1/u+1
Okay, it sounds likee, u plus 1 over 1 plus 1 over u. alll of that over (divided by) , 1 over u+1

I can't figure out how to do it.
Thank youuu.
Click here to see answer by solver91311(16868)

Question 175769: If is a solution for , where m and n are real numbers, what is the value of m?
Click here to see answer by stanbon(57222)

Question 175764: Find all the geometric sequences such that the sum of the first two terms is 2 and the sum of the first three terms is 3.
I got this:
a + ar = 2
a + a(+- 1/√a) = 2
I don't know what to do now. Please help!
Click here to see answer by Edwin McCravy(8880)

Question 176226: the subject area is on imaginary numbers. what is i to the power of 359 equal to.
Click here to see answer by stanbon(57222)

Question 176226: the subject area is on imaginary numbers. what is i to the power of 359 equal to.
Click here to see answer by solver91311(16868)

Question 176349: How do you simplify (3+i)^57 ?
Click here to see answer by stanbon(57222)

Question 176400: My math question reads:
If one of the solutions to a quadratic function is 1+i(squareroot2), what is the b value in the quadratic polynomial?
Could you please help me figure out this math problem?
Please and thank you.
Click here to see answer by Mathtut(3670)

Question 176496: how do I simplifiy the fraction -(2x over -xy)?
Click here to see answer by Mathtut(3670)

Question 176697: The imaginary number i is defined such that i^2 = –1. What does i + i^2 + i^3 + .... + i^23 equal? The answer is supposed to be -1, but I thought it should be -i according to another source. Is the answer key wrong?
Click here to see answer by solver91311(16868)

Question 176897: what is the recipical of 7-4i/5
Click here to see answer by Fombitz(13828)

Question 176942: 20-12i=5m+4ni
Click here to see answer by jim_thompson5910(28476)

Question 177505: Give the polar and exponential forms of each of the complex numbers:
a)6-2j
b)-4j
Click here to see answer by solver91311(16868)

Question 177514: Find all the roots of :
a) (x^3) - 1=0
b)(x^5)- 32j=0
Click here to see answer by stanbon(57222)

Question 177575: A quatradic has a zero of -2-3i. what integral factor led to this zero. Having much trouble with these types of questions.
Click here to see answer by Mathtut(3670)

Question 177579: I can't really seem to get exactly the correct answer on this problem. Any help would be great!
Simplify:

Click here to see answer by Mathtut(3670)

Question 177618: Find all the roots of:
x^5 - 32j=0
Click here to see answer by stanbon(57222)

Question 176499: how do I find the calue of y in the equation 3 over y-2=8?
Click here to see answer by HyperBrain(694)

Question 178320: help
Click here to see answer by user_dude2008(1861)

Question 178489: I need help to resolve
Multiply (1/2 + i)^2
Click here to see answer by jim_thompson5910(28476)

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