Questions on Algebra: Complex Numbers answered by real tutors!

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Question 960924: Solve the x for7 points ; x^2=3x-5 thank u
Click here to see answer by harpazo(655)

Question 960925: Solve for x for 4 points: x^2+16=0
Click here to see answer by harpazo(655)

Question 961653: I can not figure out this problem. All my other one come out correct but this doesn't. It could be that my score key is wrong but I want to be sure that I am not working it out wrong.
*I need to find the FRACTION of 0.06 2/5%
Thanks
Click here to see answer by josmiceli(19441)

Question 961640: i^2i is what type of no. Explain deaitly?
Click here to see answer by Fombitz(32388)

Question 961732: i to the power of 2i =0.0432139183 so it is A)irrational B)rational C)integers D) purely imaginary number plz help me
Click here to see answer by MathLover1(20849)

Question 961793: What values for, theta(0<=theta<=2pi) satisfy the equation?
tan^2 theta=-3/2 sec theta
A. pi/3, 5pi/3
B. 3pi/4, 5pi/4
C. 2pi/3, 4pi/3
D. pi/2, 5pi/2
Click here to see answer by stanbon(75887)

Question 961795: Which expression completes the trigonometric identity?
sec((pi/2)-theta)
A. -cos theta
B. sin theta
C. sec theta
D. csc theta
Click here to see answer by stanbon(75887)

Question 961791: Simplify the trigonometric expression
cot theta tan theta
A. cot theta
B. 1
C. sin theta
D. tan theta
Click here to see answer by Alan3354(69443)

Question 961642: i^2i is purely imaginary no.
Click here to see answer by Fombitz(32388)

Question 962408: Can tyou help please with the equation: calculate the products: (4+3i)(7-3i)
Click here to see answer by macston(5194)

Question 962408: Can tyou help please with the equation: calculate the products: (4+3i)(7-3i)
Click here to see answer by lwsshak3(11628)

Question 962407: Please help with these equations: calculate the products; (-i)^4�3i^3
Click here to see answer by lwsshak3(11628)

Question 962410: Can you please help with the polar form question: write the complex number in polar form: -5 +12i
Click here to see answer by Murthy(22)

Question 962419: How do you work this equation out? You have to find x and y
(2x-3i)+(-3+2y)i=y-xi
Click here to see answer by stanbon(75887)

Question 962409: Can you please help with this equation: Write complex number in polar form: √7+√21 � i
Click here to see answer by stanbon(75887)

Question 962428: How do you find th earea of a triangle if it has mixed units

Click here to see answer by Alan3354(69443)

Question 962427: If the h=200 mm and the b=11.5 cm whats the answer

Click here to see answer by Alan3354(69443)

Question 962518: could explain for me 1+i, i how to form 4th degree polynomial

Click here to see answer by hkwu(60)

Question 962554: Can you please help: solve x and y : 4-i/2+i= y-1/x
Click here to see answer by josgarithmetic(39613)

Question 962604: Finding polynomial having degree and zeros:
Degree: 5 Zeros: 7, -i, -6+i
Click here to see answer by Alan3354(69443)

Question 962604: Finding polynomial having degree and zeros:
Degree: 5 Zeros: 7, -i, -6+i
Click here to see answer by MathLover1(20849)

Question 962570: Please help for equation: Rationalise following complex quotients:( 2-3i)/(1+2i)
Click here to see answer by ankor@dixie-net.com(22740)

Question 962867: Solve and show steps (3-i)/(1+2i)
Click here to see answer by Alan3354(69443)

Question 962858: Solve (3-i)/(1+2i)
Click here to see answer by Alan3354(69443)

Question 963235: Please help with equation: Rationalise the complex quotients: 3i^12-i^9 /2i+1
Click here to see answer by josgarithmetic(39613)

Question 963237: Need help please with thus equation : solve for z : z+i^3 = 1/1-i^2
Click here to see answer by rothauserc(4718)

Question 963308: x-15=-8
Click here to see answer by EdenWolf(517)

Question 963561: Can you please help me, have difficulty with question: Write following complex number in rectangular form and sketch their representation in Argand diagrams; 4 cis 120�
Click here to see answer by Alan3354(69443)

Question 963738: Sqrt of -15 times the sqrt of -5
Click here to see answer by lwsshak3(11628)

Question 963864: Please help with equation please; Using Cramers rule,solve system of equation: {8x+3y=5. And. 4x-3y= 7}
Click here to see answer by Fombitz(32388)

Question 963864: Please help with equation please; Using Cramers rule,solve system of equation: {8x+3y=5. And. 4x-3y= 7}
Click here to see answer by rothauserc(4718)

Question 964494: i need to rewrite -9 -6 in complex number notation
Click here to see answer by Fombitz(32388)

Question 965200: The value of √i =�1+I/√2
How come?????

Click here to see answer by Fombitz(32388)

Question 965261: Simplify
SQRT(27) + SQRT(-27)
A. -3[SQRT(3)] - 3[SQRT(3)]i
B. 0
C. 3[SQRT(3)] + 3[SQRT(3)]i
D. -3[SQRT(3)] + 3[SQRT(3)]i
E. 3[SQRT(3)] - 3[SQRT(3)]i
F. 6[SQRT(3)]
Click here to see answer by MathLover1(20849)

Question 965259: Simplify
SQRT(-100)
A. -[SQRT(100)]i
B. -10i
C. [SQRT(100)]i
D. 10i
E. 10
F. -10
Click here to see answer by Fombitz(32388)

Question 965263: Simplify
(-1 + [SQRT(3)]i)3
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 MathLover1(20849)

Question 965260: Simplify
SQRT(-8) + SQRT(-2)
A. 3[SQRT(2)]i
B. SQRT(6)
C. [SQRT(6)]i
D. SQRT(-6)
E. -4
F. -3[SQRT(2)]i
Click here to see answer by MathLover1(20849)

Question 965258: Simplify
sqrt(-12)
A. -[sqrt(12)]i
B. -2[sqrt(3)]
C. [sqrt(12)]i
D. -2[sqrt(3)]i
E. -[sqrt(3)]
F. 2[sqrt(3)]i
Click here to see answer by MathLover1(20849)

Question 965292: Can you please help with this equation; Using Cramer's rule solve the system of equations: { x + y + z= 6 and { 3 x - y + 2z = 7 } and { 3y - 4z = -6}
Click here to see answer by Fombitz(32388)

Question 965290: Please help with equation: write 9 cis (3pi/2) in rectangular form and sketch their representation in Argand diagram
Click here to see answer by Fombitz(32388)

Question 962627: I need to find the complex zero for the polynomial function and write it in factored form:
f(x)=x^3-5x^2+17x-13
Click here to see answer by eyes521(2)

Question 966814: Find a polynomial with the lowest degree, with real coefficients whose zeros include, 4,-10, 3+4i
I've gone through the problem and i dont have an answer that matches the choices im not sure if i did it wrong or if the paper is incorrect so checking here!
Click here to see answer by josgarithmetic(39613)

Question 966957: Calculate ( minus ( 2 over 3 ) + ( 2 over 3 ) i ) to the power minus 4, simplifing your answer and giving it in the form a + i b, with a and b given exactly.
((-2/3)+((2/3)i))^4
I've managed to work it out with a fraction as the answer but need it in form a+ib
Click here to see answer by Fombitz(32388)

Question 966816: express in the form a+bi, where a and b are real numbers.
7(cos pi+ i sin pi)
Click here to see answer by Fombitz(32388)

Question 967492: 4n^3/2=8^-1/3 Find the value of n.Thanks!
Click here to see answer by MathLover1(20849)

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