Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 432413: how do you find real numbers x and y for which (x+2i)(y-i)=-4-7i
Click here to see answer by Gogonati(855)

Question 432749: Please help me solve and check this equation. Thank you!
1/2x=22

Click here to see answer by checkley79(3341)

Question 432385: Please help me with this problem
determine k so that the first polynomial is a factor of the second.
;
;
I tried but I don't understand it still
Click here to see answer by ankor@dixie-net.com(22740)

Question 432854: Find the dicriminant and determine the number of real solutions then solve please. 3x^2-75=0
Click here to see answer by mananth(16946)

Question 433276: i need help solving -5(x+4)^2+3
Click here to see answer by Alan3354(69443)

Question 433530: i need help in algebra 1 (9.1)thouhg (9.7)...thank you..
Click here to see answer by richard1234(7193)

Question 433535: 6i/3-5i
Click here to see answer by ankor@dixie-net.com(22740)

Question 434034: please help me solve this equation.
3k^6-27
Click here to see answer by stanbon(75887)

Question 434129: express the equation (2+3i)^2 divided by (1+i) in the form of x+yi
Click here to see answer by shree840(260)

Question 434455: RATIONALIZE THE NUMERATOR.

thanks
Click here to see answer by edjones(8007)

Question 435098: verify that 2-5i is a root of the equation z2-4z+29=0
Click here to see answer by Gogonati(855)

Question 435677: ln 3x=5
A. x=(simplify)
B. x=(round to 4 decimal)
Click here to see answer by Alan3354(69443)

Question 435674: A holding pen for cattle must be square and have a diagonal length of 140 meters
A. find the length of 1 side of the pen
B. find the area of the pen
(an exact answer using radicals as needed)
Click here to see answer by Alan3354(69443)

Question 435673: the hypotenuse of an isosceles right triangle is 7 centimeters longer than either of its legs. Find the exact length of each side(an isosceles right triangle is a right riangle whose legs are the same length)
The length of one leg is
The length of the oter leg is
the length of the hypotenuse is
(simplify your answer using radicals as needed)
Click here to see answer by mananth(16946)

Question 436159: If f(x) =x^2-6x+2 and g(x) =-2x. Find the following composition?
(g*f)(2)
Click here to see answer by robertb(5830)

Question 436160: f(x) = 4x^2 -7 and g(x) =4x
Find (f*g)(x)=
Find (g*f)(x)=
Click here to see answer by robertb(5830)

Question 436410: z1=(1-i)
z2=(1/2+√3/2 i)
multiply them to get z3
Click here to see answer by solver91311(24713)

Question 436549: A holding pen fro cattle must be square and have a diagonal length of 140 meters.
A: Find the length of a side of the pen?
(Symplify your answer. An exact answer using radicals as needed)
B: The area of the pen in square meters is?
Click here to see answer by nerdybill(7384)

Question 436866: Find all complex solutions of the equation: X^4-X^3+X^2-x=0.
Click here to see answer by stanbon(75887)

Question 437647: (3-2i)-(2+4i)

Click here to see answer by Edwin McCravy(20054)

Question 437653: If P ⊆ Q and Q ⊆ P, then what can be said about the equality of the two sets?
Thank you
Click here to see answer by jim_thompson5910(35256)

Question 437648: Determine whether the sets are equal only, equivalent only, both equal and equivalent, or neither equal nor equivalent.

{ 3, 15} and { 3, 1, 5}
Thank you
Click here to see answer by jim_thompson5910(35256)

Question 437649: Find the Cartesian product or cardinal number as requested.

n(A � B) = 90
n(A) = 10
Find n(B).

Thank you
Click here to see answer by jim_thompson5910(35256)

Question 438441: Please Help
Rectangles ABCD and EFGH have equal areas. If EF= 1/2AB, which of the following is true...?
(1) FG = 2BC
(2) (AB)(GH) = (BC)(EH)
(3) AB/EF = BC/FG
(4) AB/BC = EF/FG
Click here to see answer by MathLover1(20849)

Question 438783: how to solve
(1-2i)(2+i)
Click here to see answer by stanbon(75887)

Question 439024: write expression as a comlpex number in standard form
(3-i)+(2-9i)
Click here to see answer by stanbon(75887)

Question 439362: I'm not sure I am in the right section, but can anyone help with the following problem?
Find dy/dx for y = 3x^1/2 - 2x^3/2 + 7
Thank you.
Click here to see answer by richard1234(7193)

Question 439533: when plotting 8-9i on the complex plane gow do you need to move?
Click here to see answer by stanbon(75887)

Question 439542: square root of 64 rounded to nearest thousand
whats the answer

Click here to see answer by richard1234(7193)

Question 439207: Find the sixth term of the geometric sequence 24,8,8/3...
a6=
Click here to see answer by robertb(5830)

Question 439209: Find the 29th term of the arithmetric sequence 22,20,18.
a29=
Click here to see answer by robertb(5830)

Question 439208: Find the 18th term. The 1st term is 1 and the common difference is -5.
a18=
Click here to see answer by robertb(5830)

Question 439206: If the fouth term of a geometric progression is -18 and the 5th term is 54, find a1 and R
A) R=
B) a1=
Click here to see answer by robertb(5830)

Question 440248: Simplify: square root of (-20)-3sqrt(-45)+sqrt(-80)
Click here to see answer by ewatrrr(24785)

Question 440248: Simplify: square root of (-20)-3sqrt(-45)+sqrt(-80)
Click here to see answer by Gogonati(855)

Question 440245:
if w=9-4i then: if w = 9 - 4i then: a. Find the complex conjugate of w, denoted by w b. Find w + w �� 2

Click here to see answer by ewatrrr(24785)

Question 440245:
if w=9-4i then: if w = 9 - 4i then: a. Find the complex conjugate of w, denoted by w b. Find w + w �� 2

Click here to see answer by Edwin McCravy(20054)

Question 440241: divide and simplify: 4+6i/2-3i
Click here to see answer by Gogonati(855)

Question 440235: If, x+yi=3+2i, then what do x and y equal?
Click here to see answer by Gogonati(855)

Question 440330: Given that f(x) = has -1 as a zero of multiplicity 2, 2 as a zero, and -3 as a zero, find all other zeros.
I tried using synthetic division, but I am not sure after doing so that it was correct.
Click here to see answer by richard1234(7193)

Question 440387: `Given that f(x) = has -1 as a zero of multiplicity 2, 2 as a zero, and -3 as a zero, find all other zeros
Click here to see answer by richard1234(7193)

Question 441268: square root of -48.
Click here to see answer by stanbon(75887)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380