Questions on Algebra: Complex Numbers answered by real tutors!

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Question 371637: Find the values of x and y that make each equation true.
5i - 6x = (10y)i + 2
Click here to see answer by robertb(5830)

Question 372039: how do you simplify (-3i)(4i)(-5i)
Click here to see answer by Fombitz(32388)

Question 372052: 3x+2y=11
4x+y=-2
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Question 372059: Sqrt-100a^4b^2
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Question 372254: Sole the inequality, and express the solutions in terms of intervals.
X^4 is greater than or equal to x^2
Click here to see answer by robertb(5830)

Question 372341: Solve

Click here to see answer by mananth(16946)

Question 372345: Solve

Click here to see answer by neatmath(302)

Question 372345: Solve

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Question 372399: i^103
how do I simplify this?
something about dividing by four and taking the remainder??
Click here to see answer by user_dude2008(1862)

Question 372532: Write as a complex number in standard form.
8+i / 1-2i
Click here to see answer by Fombitz(32388)

Question 372530: Write as a complex number in standard form.
(2+11i) - (6-i)
Click here to see answer by Fombitz(32388)

Question 372616: 4x^3-5x/2x+1
Click here to see answer by Fombitz(32388)

Question 372780: What is the complex conjugate of the (square root of -400) + 17?
Click here to see answer by solver91311(24713)

Question 372780: What is the complex conjugate of the (square root of -400) + 17?
Click here to see answer by josmiceli(19441)

Question 372933: The expression (-1+i)^3 is equivalent to
A) 2+2i
B) -1-i
C) -3i
D) -2-2i
I tired doing it but I didn't come up with any of the answers above. I think I did it wrong. So first I do (-1+i)(-1+i)=1-1i-1i+i^2. Then I multiplied
1-1i-1i+i^2 with -1+i. Please help and explain it step by step. Thank you!
Click here to see answer by mananth(16946)

Question 373060: SOLVE:
3x^2 - 41x = -60
Click here to see answer by mananth(16946)

Question 373191: How do you simplify (7i-6i) - (5+6i), please and thank you?

Click here to see answer by Fombitz(32388)

Question 373182: Which of the following is the correct notation for the complex number sqr(-100 - 84)?
Click here to see answer by Fombitz(32388)

Question 373307: I need help with this problem.
We are doing a lesson entitled "Writing Equations From Solutions"
x= 3 +- (plus or minus) 4i
I need to find the sum and the product to make it into an equation.
I tried doing it and I got an answer, but I want to make sure I did it right, because I don't think I did.
I got x^2-6x+25, but, again, I don't think I did it right.
Please and thank you for your help.
Click here to see answer by edjones(8007)

Question 373620: 3-x=3x+27
Click here to see answer by rfadrogane(214)

Question 373662: Simplify the following expression.

Click here to see answer by jsmallt9(3758)

Question 373658: Add the complex expressions, and simplify.
(-5.2 � 5.3i) + (-8.5 + 6.9i)

Click here to see answer by jsmallt9(3758)

Question 374008: I know the answer is 25, but im unsure if it's negative or positive.
(-5i)^2
the i is the imaginary number, not a variable.
Click here to see answer by rfer(16322)

Question 374356: Solve 125x^3 + 343 = 0. Find all complex roots.
How do I do this?
Click here to see answer by Jk22(389)

Question 374909: Find the power of the following complex number: z=(sqrt(2)-i)^(4)
This one has been killing me.... thanks
Click here to see answer by Fombitz(32388)

Question 374909: Find the power of the following complex number: z=(sqrt(2)-i)^(4)
This one has been killing me.... thanks
Click here to see answer by solver91311(24713)

Question 375258: what is the product of the complex numbers (3+i) and (3-i)
Click here to see answer by mananth(16946)

Question 375258: what is the product of the complex numbers (3+i) and (3-i)
Click here to see answer by robertb(5830)

Question 375262: whatis the sum of the complex numbers (12-5i) and (-3+4i)
Click here to see answer by robertb(5830)

Question 375265: question 1)what are the solutions to the equation x^2-6x+5=-8

Click here to see answer by mananth(16946)

Question 375264: I am having a difficult time simplifying the following in terms of a + bi:
-i/8 + 8i

i represents an imaginary number
Click here to see answer by Fombitz(32388)

Question 375259: what are the solutions to the equation x(2)+2x+2=0
Click here to see answer by Fombitz(32388)

Question 375266: question 2)what are the x-intercepts of the graph 0f y=12^2-5x-2?
Click here to see answer by Fombitz(32388)

Question 375272: 1/3+4i + i/3-4i

Click here to see answer by Fombitz(32388)

Question 375288: How do you solve i^199 algebraically. PLease show all the math
Click here to see answer by Alan3354(69443)

Question 375712: (2w+i)/(w-i) = (3w+4i)/(w+3i)
I have tried solving this by bringing one side over to the other, making a common denominator, and subtracting, and setting it equal to zero, but then I get stuck. There must be some trick to this. I appreciate you looking at this problem. =)
Click here to see answer by robertb(5830)

Question 375728: On a varsity baseball team 1/2 of the players are seniors, 1/4 of the players are juniors, and the remaining 5 players are sophomores. How many players are on the team?
Click here to see answer by Fombitz(32388)

Question 376035: Hi,
My question is about complex numbers. My problem is as follows: -2i / 6 + 5i
I understand the first step is to multiply by the denominator's conjugate (I think). This would be 6 - 5i. My work shows: -12i + 10i^2 / 36 - 10i^2
Following that: -12i - 10 / 46
(I turned
the -10i^2, in the denominator, into +10. I am unsure if this is correct.)
Finally: -6i - 5 / 23
I apologize for typing a lot here; I only attempt to be clear with my problem and show my work. Thanks!
Click here to see answer by mananth(16946)

Question 376174: (x/y)-(y/x)
____________
(x/y)-1
Click here to see answer by mananth(16946)

Question 376181: 36 vehicles are parked in a garden. Some of them were scooters and taxies. The total number of wheels of these vehicles were 100.Find out how many were taxies and scooters.
Click here to see answer by Jk22(389)

Question 376075: Pls help! If you can answer either one of them, I am so appreciated.
1.(x-2)(x+3)^2 / x^4-13x^2+36.
2. If polynomial p(x)=2x^3 -3x^2-10 has exactly one real zero r, -1<=r<=1, which following is true: A. -1<0 B. 0<1 or C.other answer?
3. what is a portion of graph of y= y|-|-x|| ? graph it.
4. what's X if 3x^2-2+7=0 then (x- 1/3)^2= ?
5. If y=b^x and b>1, which one is true: A log y b=x. B. log b x=y. C. other answer.
6. The radian measure of angle containing x degree is: A.Pi x/180 B. Pi x/ 180. C. other answer
7.If f(x)= x^2, when x>0 and c>1, then f(x^c)= ?
8 2log10x-log10y=?
9.for X# 0, if f(x)3x^2 and g(x)=1/2, then f(g(x))= ?
10 3+i/2-i = ?
11. If cotx^0=1, then x=?
12. Y=x+1 and x.y=2 so what x?
13. where can you defined tan X=?
14. If f(x)=3-2x and f^-1 denotes the inverse of f, then f^-1(o) is ?

Click here to see answer by Fombitz(32388)

Question 376282: Complete the following equations:
1. (−[1/2] + [(√3)/2]i)3=_____+_____i
2. (−[1/2] − [(√3)/2]i)3=_____+_______i
3. (−[1/2] + [(√3)/2]i)3000=_____ +_____ i
(−[1/2] − [(√3)/2]i)3000=_____+_____i
I dont understand how to do these...
Click here to see answer by Alan3354(69443)

Question 376535: how do you solve 3+4i divided by 5-i
Click here to see answer by ankor@dixie-net.com(22740)

Question 377277: If 1+2i is a root of X^2-kx+5=0, find the value of k
the x^2 means that the x is squared.

Click here to see answer by robertb(5830)

Question 377365: simplify (4-3i)/(3-2i)
Click here to see answer by Fombitz(32388)

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