# Questions on Algebra: Complex Numbers answered by real tutors!

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 Algebra: Complex Numbers Solvers Lessons Answers archive Quiz In Depth

 Question 391522: How do solve (x^2/3) +1 = 9? (x^2/3)+1-1 = 9-1 (x^2/3) = 8^1 (x^2/3*3) = 9^1*3 x^2 =9^3 square x^2 = square 729 x=27 Click here to see answer by MathGenius101(2)

 Question 391571: It says here to write the expression as a complex number in standard form. The problem is 4i over -6-11i. I've tried doing the opposite on the bottom, 6+11i to cancel it out, but that's when i get stuck. Please help me! Click here to see answer by Alan3354(30959)

 Question 391576: what is the smallest positive value for X such that 180X is a perfect cube? Click here to see answer by robertb(4012)

 Question 392293: how do you solve/simplify i to the 34th power? ~thanks! Click here to see answer by Alan3354(30959)

 Question 392339: (8x+5)*this is squared*=63 how do you solve this? Click here to see answer by NancyLam(35)

 Question 392437: I need help on how to do find the answer to this problem (5-3i)(1-2i) Click here to see answer by stanbon(57219)

 Question 392989: How do I solve the equation "r^2=the square root of -624"? Click here to see answer by richard1234(5390)

 Question 393110: factor out the greatest common factor, simplify the factors, if possible. 3x(5x-2)-5(5x-2) A. (15x-5)(x-2) B. (3x+5)(5x+2) C. (15x+5)(x+2) D. (3x-5)(5x-2) Click here to see answer by ewatrrr(10682)

 Question 393445: m^7+m^9=??? its telling me to factor out the greatest common factor Click here to see answer by rfer(12644)

 Question 393451: 3n^3+12^n^2-36^n=??? factor each polynomial as completely as possible Click here to see answer by edjones(7569)

 Question 393497: y^4z^2, y^6z^8,z^9=? what is the greatest common factor in all these i got y^2 for some reason Click here to see answer by Alan3354(30959)

 Question 393616: y^4z^2, y^6z^8,z^9=? what is the greatest common factor in all these i got y^2 for some reason Click here to see answer by robertb(4012)

 Question 394152: ```How do you rewrite each quotient in the form a+bi? 2 ----- 3+i ``` Click here to see answer by Edwin McCravy(8879)

 Question 394194: Hello. My son is struggling with complex numbers and this stuff is like a second language to me. Any help is greatly appreciated. Thanks. 1) 4i^5-6i^4+3i^3-9i^2 2) 3i^4-(2i-6)-5i^2+(2+12i) 3) (4i-5)*(5i-4) 4) (5i+8)/(3i) 5) (11-3i)/(4+5i) Click here to see answer by stanbon(57219)
 Question 394194: Hello. My son is struggling with complex numbers and this stuff is like a second language to me. Any help is greatly appreciated. Thanks. 1) 4i^5-6i^4+3i^3-9i^2 2) 3i^4-(2i-6)-5i^2+(2+12i) 3) (4i-5)*(5i-4) 4) (5i+8)/(3i) 5) (11-3i)/(4+5i) Click here to see answer by MathLover1(6614)

 Question 394198: Absolute Value of complex numbers Solve the following: 1) If z=3-4i then |z|= 2) If z=8-sqrt(39i) then |z|= Any help is very much appreciated! Click here to see answer by stanbon(57219)

 Question 394197: Hi, I'm having trouble with these two complex numbers problems: Directions: Without using a graph, find the endpoint of the vector that satisfies the following questions. 1. (-2-i)+(8-5i) 2. (3+7i)-(8+2i) Click here to see answer by stanbon(57219)
 Question 394197: Hi, I'm having trouble with these two complex numbers problems: Directions: Without using a graph, find the endpoint of the vector that satisfies the following questions. 1. (-2-i)+(8-5i) 2. (3+7i)-(8+2i) Click here to see answer by josmiceli(9649)

 Question 394199: Use a graph to demonstrate the operation of these complex numbers: 1) (7-6i)+(-5-2i) 2) (5-9i)-(-3-12i) I have a test on these tomorrow so thank you for any help. Click here to see answer by stanbon(57219)

 Question 394195: solve for x to the nearest thousandth e^0.5x=8 Click here to see answer by josmiceli(9649)

 Question 394201: Choose the correct quadrant to use in this conversion from standard to trigonometric form: 1) 6-11i I am having a very difficult time understanding this question. Any help is greatly appreciated. Click here to see answer by josmiceli(9649)
 Question 394201: Choose the correct quadrant to use in this conversion from standard to trigonometric form: 1) 6-11i I am having a very difficult time understanding this question. Any help is greatly appreciated. Click here to see answer by Edwin McCravy(8879)

 Question 394202: For the complex number 5+6i find the value of θ (theta) in the trigonometric form (answer to the nearest hundredth of a degree). I have a test on complex numbers tomorrow and this kind of problem will be on it. I don't understand it at all, so thank you for any help on this. Click here to see answer by CharlesG2(828)

 Question 394334: how do you solve 0.04x + 0.2 - 0.4x = 0.38D, I have several others to answer too, please tell me how to do so I can finish my homework Click here to see answer by ankor@dixie-net.com(15624)

 Question 394389: How do you insert grouping symbols in this equation true? 8+ 25 x 2 divided by 6=11 Click here to see answer by ankor@dixie-net.com(15624)

 Question 395693: find the exact roots for the following: x^3-8x^2+4x+48 Click here to see answer by ewatrrr(10682)

 Question 395837: Hello, I a having a hard time with this complex numbers problem. Any help is greatly appreciated! The point (-4+bi)has been plotted on the complex plane ad r=8. If 0°≤θ≤180° find the value of b. Leave your answer as a radical. θ= Theta Click here to see answer by jim_thompson5910(28476)

 Question 395851: What is the product of the complex numbers (3+i) and (3-i)? A) 8 B) 10 C) 9-i D) 10-6i Click here to see answer by Edwin McCravy(8879)
 Question 395851: What is the product of the complex numbers (3+i) and (3-i)? A) 8 B) 10 C) 9-i D) 10-6i Click here to see answer by stanbon(57219)

 Question 395846: If i=sqrt(-1), what is the value of i^4? Any help is greatly appreciated! Click here to see answer by Earlsdon(6287)

 Question 395849: If i=sqrt(-1), then 4i(6i) A) 48 B) 24 C) -24 d) -48 Click here to see answer by jim_thompson5910(28476)

 Question 395841: Hi, I have a big test on complex numbers tomorrow and I am having a very hard time with this particular question: Directions: On a complex plane, a point z has been graphed. your If cosθ=(-8)/(22) and (π)/(2)≤θ≤π: a) Find z in standard form. b) Find z in trigonometric form. (Use whole degrees) θ= Theta π= pi Click here to see answer by josmiceli(9649)
 Question 395841: Hi, I have a big test on complex numbers tomorrow and I am having a very hard time with this particular question: Directions: On a complex plane, a point z has been graphed. your If cosθ=(-8)/(22) and (π)/(2)≤θ≤π: a) Find z in standard form. b) Find z in trigonometric form. (Use whole degrees) θ= Theta π= pi Click here to see answer by Edwin McCravy(8879)
 Question 395841: Hi, I have a big test on complex numbers tomorrow and I am having a very hard time with this particular question: Directions: On a complex plane, a point z has been graphed. your If cosθ=(-8)/(22) and (π)/(2)≤θ≤π: a) Find z in standard form. b) Find z in trigonometric form. (Use whole degrees) θ= Theta π= pi Click here to see answer by austin92(1)
 Question 395841: Hi, I have a big test on complex numbers tomorrow and I am having a very hard time with this particular question: Directions: On a complex plane, a point z has been graphed. your If cosθ=(-8)/(22) and (π)/(2)≤θ≤π: a) Find z in standard form. b) Find z in trigonometric form. (Use whole degrees) θ= Theta π= pi Click here to see answer by richard1234(5390)

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