Questions on Algebra: Complex Numbers answered by real tutors!

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Algebra: Complex Numbers

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Question 139451: X^4-61x^2=-900
Click here to see answer by scott8148(3382)

Question 139451: X^4-61x^2=-900
Click here to see answer by checkley77(7072)

Question 139449: factor the expression
x^3-27

Click here to see answer by smart_gal(1)

Question 139755: Find the balanceon $6,000 deposited at 6% compounded semi-annually for 3 years.

A.) $7164.31
B.) $7146.10
C.) $8511.11
J.) $6556.36 Please help ASAP
Click here to see answer by solver91311(5072)

Question 139806: please help solve
Divide and express the result in standard form
6 -5i / 8 + 4i
Click here to see answer by jim_thompson5910(13794)

Question 140206This question is from textbook
: i^41(book answer is i. I need help how to simplify)This question is from textbook

Click here to see answer by scott8148(3382)

Question 140381: Evaluate the expression and write the result in the form of a+bi.

25/4-3i
Click here to see answer by Earlsdon(4900)

Question 140851: Please help me solve these problems.
Factor. Check by multiplying
4x^5 y^3+16x^3 y^2+32xy and
9x^2=72x and
factor by grouping
21x^3-15x^2+28x-20.
Thank you very much!
Click here to see answer by jim_thompson5910(13794)

Question 141136: The expression 1/1.2 + 1/1.3 + 1/1.4 +......+ 1/n(n+1) for any natural number n is
(a) always greater than 1 (b)always less than 1
(c) always equal to 1 (d)not definite
Click here to see answer by solver91311(5072)

Question 141233: Use synthetic division to solve the following problem. Use the ^ sign to show an exponent (x2 = x^2). This is a bonus question my teacher asked on a piece of homework. Please help me.

Click here to see answer by stanbon(26291)

Question 141419: i don't get them?
Click here to see answer by rapaljer(3622)

Question 141499: First of all would like to thank you for you help,I would like to know is this consider a complex equation or number and how would i solved it algebraically,
5-2/x-6=10-2x/x-6..
Click here to see answer by ankor@dixie-net.com(6693)

Question 141516: Suppose that a polynomial function of degree 4 with rational coefficients has 6, 4, 5i as zeros. Find the other zero.
Click here to see answer by jim_thompson5910(13794)

Question 141633: 12=2.43*W^0.3326
Click here to see answer by nabla(412)

Question 142500: when doing this problem can you use the cross multiply method or do you use the LCM/LCD method. I tried to do the cross mulitply method but the answer did not turn out right.....Can you help
Click here to see answer by rapaljer(3622)

Question 142665: solve x^2+8x+25=0
Click here to see answer by vleith(1977)

Question 143441: Mark can type 45 words a minute. and there are 450 words per page. At this rate, how many hours would it take Mark to type a paper x pages long?
Tickets to a PLAY ARE $2 FOR STUDENTS AND $4 FOR ADULTS. a TOTAL OF 250 TICKETS WERE SOLD. iF S IS THE #OF STUDENT TICKETS SOLD, WHICH OF THE FOLLOEING IS A FORMULA FOR THE TOTAL SALES IN DOLLARS.
eITHER, 2S+4(250-S)
OR 4S+2(250+S)
0R4S+500
0R 2S+1000
Click here to see answer by stanbon(26291)

Question 143440: 22 STUDENTS HAVE CHARTERED A BUS TO TRAVEL TO THE CHAMPIONSHIP GAME AND WILL SPLIT THE COST EQUALLY. aFTER 17 OF THE STUDENTS HAVE TURNED IN THEIR SHARE, $131.75 HAS BEEN COLLECTED. What is the cost of chartering the bus?
Click here to see answer by edjones(3298)

Question 143906: Simplify:
12/(x+h+15) minus 12/(x+15) all divided by h
Click here to see answer by stanbon(26291)

Question 144179This question is from textbook College Algebra
: solve for x and y.
(3x-1)+(y+5)i=1-3iThis question is from textbook College Algebra

Click here to see answer by stanbon(26291)

Question 144189: what is the value of i or imaginary?
Click here to see answer by jim_thompson5910(13794)

Question 144435: THE EXPRESSION 5/4-3I IS EQUIVALENT TO??

Click here to see answer by stanbon(26291)

Question 144511: Can you tell me if this is correct or not?
Perform the indicated operation. Simplify if possible.
15/17x-7/17x
= 15-7/17x
= 8/17x
Click here to see answer by Alan3354(6092)

Question 144509: Solve the equation:
x^-2 - 15x^-1 + 44 = 0
Click here to see answer by Alan3354(6092)

Question 144513: Can you tell me if this problem is correct?
Simplify:
(3/x+4/x^2)/(9/x^2-16/x)
= (3(x)/x(x)+4/x^2)/(9/x^2-16(x)/(x)(x)
= (3x/x^2=4/x^2)/(9/x^2-16x/x^2)
= (3x+4/x^2)/(9-16x/x^2)
= (3x+4)/(9-16x)
Click here to see answer by Alan3354(6092)

Question 144510: Multipy or divide as indicated. Simplify completely.
(48x+48 / 10x-4)(40x-16 / 12x^2-12)
In other words, 48x+48 over 10x-4 multiplied by 40x-16 over 12x^2-12
Click here to see answer by ankor@dixie-net.com(6693)

Question 144924: Solve the formula for the specified letter.
x = ab/c for c
Click here to see answer by stanbon(26291)

Question 145361: Please help me solve the follwing problem:
(6+1/3)/(3-2/9)
This is as far as I have gotten:
[(3/3)(6/1)+(1/3)]/[(9/9)(3/1)-(2/9)]
[(18/3)+(1/3)]/[(27/9)-(2/9)]
(19/3)/(25/9)
I do not know where to go from here. Please help!
Click here to see answer by stanbon(26291)

Question 145571: "plot all the complex numbers in the complex plane whose absolute value is 4. "
Click here to see answer by vleith(1977)

Question 145570: "plot all the complex numbers in the complex plane whose absolute value is 4. "
Click here to see answer by stanbon(26291)

Question 146029This question is from textbook Advanced Functions & Introductory Calculus
: p.16 #23
I cannot figure out how to create an equation from the following complex numbers
a) 2+i and 2-i
b) 3+2i and 2-3i
thaks!This question is from textbook Advanced Functions & Introductory Calculus

Click here to see answer by stanbon(26291)

Question 146081: Name the complex conjugate, then find product of the complex number with its conjugate.
3-i
answers:
A) -3+i;10
B) 3+i;8
C) 3+i;10
D) -3+i;8
Click here to see answer by Earlsdon(4900)

Question 146080: -8<_2x-5<11
Click here to see answer by edjones(3298)

Question 146094: What us is the additive identity of -5 + 6i
Click here to see answer by stanbon(26291)

Question 147192: I'm completely stumped! I don't know how to take the square root of a negative number! Can somebody please show me how to figure this out?
Click here to see answer by nabla(412)

Question 147558: I'm not quite sure how to simplify the expression 4 over 2+5i (4/2+5i) and I'm not quite sure what i to the -35th power means.
Click here to see answer by jim_thompson5910(13794)

Question 147558: I'm not quite sure how to simplify the expression 4 over 2+5i (4/2+5i) and I'm not quite sure what i to the -35th power means.
Click here to see answer by stanbon(26291)

Question 147558: I'm not quite sure how to simplify the expression 4 over 2+5i (4/2+5i) and I'm not quite sure what i to the -35th power means.
Click here to see answer by Nate(3495)

Question 148523: if i represents the imaginary number whose square is -1,then (radical2 + radical2 x i)^4= ?
Click here to see answer by vleith(1977)

Question 148523: if i represents the imaginary number whose square is -1,then (radical2 + radical2 x i)^4= ?
Click here to see answer by Earlsdon(4900)

Question 148391: please help me with this question. (-1+iroot3)(-1+iroot3)=
Click here to see answer by Fombitz(2113)

Question 148662: Im not sure what category this goes under. but i would like to know how to answer these types of problems including:
cuberoot 5/16
cuberoot 4/17
things like that
Click here to see answer by stanbon(26291)

Question 148996: solve the given fractional equations. A. 4-a/1-a=12/3-a+1 B. 2x+7/14-x+6/7=5x-4/3x+1 . simplify the given complex fractions using the method you prefer. A. 1-A/A^1-1= B. x-x^2-1/x / 1-x-1/x=
Click here to see answer by stanbon(26291)

Question 149093: PROBLEM: (1/5 – i)^2
Click here to see answer by solver91311(5072)

Question 149336: how do i write 2,-3/7, 0.75,-3/2 in increasing order
Click here to see answer by edjones(3298)

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