Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 737751: What is the jth root of j? Give the exact value.
Click here to see answer by Edwin McCravy(20054)

Question 737751: What is the jth root of j? Give the exact value.
Click here to see answer by Ed Parker(21)

Question 740092: I'm having trouble with a question in my lesson. Could I have some help?
(-1 + [SQRT(3)]i)^3
These are the options:
A) 2 + 2[SQRT(3)]i
B) -2 - 2[SQRT(3)]i
C) 0
D) -8
E) -8 + 8[SQRT(3)]i
F) 8
Click here to see answer by KMST(5328)

Question 740834: Write the expression (3 − 9i) + (4 + 5i) as a complex number in standard form.
Click here to see answer by solver91311(24713)

Question 740834: Write the expression (3 − 9i) + (4 + 5i) as a complex number in standard form.
Click here to see answer by lynnlo(4176)

Question 742206: 4-i over
2-6i
can you walk me through the steps Im a little rusty.
This is what I got.
2 % i
7
Click here to see answer by lynnlo(4176)

Question 742450: what is the solution for :(h-6)(h+8)
Click here to see answer by MathLover1(20849)

Question 742768: Please help me simplify (2-2i)/(3-5i)
Click here to see answer by tommyt3rd(5050)

Question 743569: how to work this problem: 4-2i / -3i
Click here to see answer by stanbon(75887)

Question 743616: I need some help with this question
-4 1/5x2 + 1 2/5x - 2 4/5 = 0
Here are my options. I can't seem to get it right.
A) x = {1 +- i[SQRT(23)]}/6
B) x = {-1 +- i[SQRT(10)]} / 6
C) x = {1 +- [SQRT(23)]} /-6
D) x = 1 +- 5/2 x^2
E) x = -1 +- 2/5 x^2
F) x = 2 +- 20 x^2
Click here to see answer by Edwin McCravy(20054)

Question 743912: how do i put(3 + 4i) + (8 + 2i) as a complex number in standard form..?
Click here to see answer by Alan3354(69443)

Question 744121: if i=squareroot of -1 and a and b are non-zero real numbers, what is 1/a+bi?
Click here to see answer by stanbon(75887)

Question 744694: I'm having some trouble with a question on my test:
.
-11x^2+12x - 6 = 0
.
Answers:
.
A) x ={-6 +- i[SQRT(60)]}/11
B) x = {-6 +- i[SQRT(30)]}/-11
C) x = {6 +- i[SQRT(12)]}/6
D) x = {-6 +- i[SQRT(22)]}/-11
E) x = {-11 +- i} /6
F) x = {11 +- i} /-6
.
.
What I did first is to insert the question into the quadratic formula, with -11, 12 and -6 as a, b and c.
(-12 � √144 - 264) / (-22)
Which turns into
(-12�√-120) / -22
.
But now I'm stuck. Could I have some help please?
Click here to see answer by Alan3354(69443)

Question 745050: Proof
a*(b*c)+b*(c*a)+c*(a*b)=0
Click here to see answer by Alan3354(69443)

Question 745496: simplify complex fraction: numerator is x/(x+2) and denominator is 1/x + 1/x+2. I think answer is x^2/2x+2 but not sure how to get it.
Click here to see answer by rothauserc(4718)

Question 745609: I need help on how to use DE Moivre's Theorem for the following,
(3-3squareroot(3i))^7 ( to the seventh)
then put it in complex form and polar(express in radians)
i have been trying for days to solve it , so if you can help it will very greaatly appreciated. :) Thanks
Click here to see answer by Alan3354(69443)

Question 746533: Please help me simplify this equation
4/2+(1/x)
Click here to see answer by Alan3354(69443)

Question 746708: graph the equation of x^2 + y^2 - 36
Click here to see answer by josgarithmetic(39613)

Question 746369: Product of (1-2i)&(-1+2i)
Click here to see answer by tommyt3rd(5050)

Question 742312: 2/i-3
Click here to see answer by tommyt3rd(5050)

Question 743488: in a right triangle, find the length of the not given. a=8, c=17
Click here to see answer by tommyt3rd(5050)

Question 739124: (7 + i ) � (6 � 2i)
I know the answer is 1 + 3i but i dont know how to get there
Click here to see answer by tommyt3rd(5050)

Question 739005: Hello!!
(2x-1)+5i=9+(y-1)i
I'm a bit confused here, would be grateful for some help. Thanks!
Click here to see answer by tommyt3rd(5050)

Question 740630: Simplify:

The answer should be in the form of
Click here to see answer by tommyt3rd(5050)

Question 746845: Degree 6;zeros:-4,6,4-5i,-6+i
Click here to see answer by tommyt3rd(5050)

Question 747273: Will you please show me how to write in a+bi form?
Click here to see answer by FrankM(1040)

Question 741034: if 3^x=10 is solved for x, which of the following is the solution rounded to the hundreths place?
a. 2.10
b. 2.09
c. 2.19
d. 2.08
Click here to see answer by FrankM(1040)

Question 747794: 5^(3x+8)=7
(five to the power of 3x+8) please explain aswell
Click here to see answer by Alan3354(69443)

Question 747934: Subtract and simplify
(4-i)-(7+4i)
I know that I need to use FOIL but I get the answer all wrong. Can someone help me understand?
Thanks,
Cassie
Click here to see answer by stanbon(75887)

Question 747939: Multiply
(9+9i)(7+i)Can someone please help me with how to do the FOIL on this? I tried and got it messed up. Thanks for the Help :)
Click here to see answer by rfer(16322)

Question 748147: Solve using the quadratic formula: 5x^2 − 8x − 3 = 0
Thank you in advance
Click here to see answer by rothauserc(4718)

Question 733131: Find the remaining zeros of each function. h(x)= 3xh(x)= 3x^5 +2x^4+ 15x^3 + 10x^2- 582x- 352, zero; -4i.
Click here to see answer by tommyt3rd(5050)

Question 743739: Find the equation of the tangent line for f(x)=3x^2-x at the given point (-2,14)
Click here to see answer by tommyt3rd(5050)

Question 738211: express in polar form:
a) 2i
b) -3
Click here to see answer by tommyt3rd(5050)

Question 740801: What are 4'th roots of -8i
Click here to see answer by tommyt3rd(5050)

Question 733134: Find the complex zeros of each polynomial function. write f in factored form.
f(x)=x^4+ 2x^3 + 22x^2 +50x- 75
Click here to see answer by tommyt3rd(5050)

Question 728671: Two complex numbers: a + bi and c + di are equal if a = c and b = d. Use that fact to solve for x and y : ( 3x -yi ) i = 6 ( 1 + yi)
Click here to see answer by tommyt3rd(5050)

Question 749966: Bob and Alice can finish a job together in 3 hours. If Bob can do the job by himself in 5 hours, what percent of the job does Alice do?
Click here to see answer by josgarithmetic(39613)

Question 750417: (-8-6i)-(5+3i)
Click here to see answer by kathydots21(7)

Question 751397: How do you solve
3-4i-(-5+2i)?
Click here to see answer by jim_thompson5910(35256)

Question 751572: xsquared - 8x + 12
Click here to see answer by lynnlo(4176)

Question 751571: xsquared + 10x + 2x
Click here to see answer by lynnlo(4176)

Question 751680: Use the quadratic formula to solve the quadratic equation x^2 − 8x − 4 = 0.

Click here to see answer by tommyt3rd(5050)

Question 727272: what is 3i/(-2+i)
Click here to see answer by tommyt3rd(5050)

Question 735579: 10x^2+1=-6x

Click here to see answer by tommyt3rd(5050)

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