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Tutors Answer Your Questions about Complex numbers (FREE)
Question 57453: I could not find what I am looking for. This is my problem:
6 - 7i / 3 + i
I know that i represents \/-1 (sq root negative 1). I have an algebra for dummies book but this section is so brief, I can't figure out this problem. Thanks so much for your help!!
Click here to see answer by hehe(5)   |
Question 58557This question is from textbook 
: The question is
If one-half of an integer is subtracted from three-fifths of the next consecutive integer, the difference is 3. What are the two integers?
Making the problem
3/5x-1/2(x-1)=3
LCF = 10
6/10x-5/10(x-1)=3
6x-5x+5=3
x=-2
But when I try to put that number back into the problem, it doesn't work out. 4 works out, but I don't know how to get there. Can you help? Thanks in advance.
This question is from textbook
Click here to see answer by Earlsdon(4898) |
Question 58739: I need help on multipying and taking "i" to powers.
My question is:
Evaluate the following epression for x=2i
x^6 + 3x^3 - 4x^2 + 2x - 5
I used the dividing power rule on one of the worked problems. The answer I got was -7 from this equation:
2(-1) + 3(2)(-i) - 4(2)(-1) + 2(i) - 5
-2 + 6(-i) + 8 + 2i - 5
1 + 8
1 + 8(-1)(1)
1 - 8
Click here to see answer by funmath(2873) |
Question 58948: can you please help me understand how to simplify this problem (3+2i)(5-i)
i keep getting different answers each time i try it the first step that i did was to use the distributive property and then i got 15-3i+10i-2 then i simplified it and got 7i+13
Click here to see answer by mszlmb(115)  |
Question 58948: can you please help me understand how to simplify this problem (3+2i)(5-i)
i keep getting different answers each time i try it the first step that i did was to use the distributive property and then i got 15-3i+10i-2 then i simplified it and got 7i+13
Click here to see answer by adesouza(1) |
Question 59877This question is from textbook Algebra 2
: I understand that i have to multiply so that the denomomintor is 1 but I dont know how to do that because the denominator is a binomal.
Heres the problem,
 over
If you have the time it would be appreciated if you could sohw me the stepsThis question is from textbook Algebra 2
Click here to see answer by funmath(2873) |
Question 59877This question is from textbook Algebra 2
: I understand that i have to multiply so that the denomomintor is 1 but I dont know how to do that because the denominator is a binomal.
Heres the problem,
over
If you have the time it would be appreciated if you could sohw me the stepsThis question is from textbook Algebra 2
Click here to see answer by stanbon(26259) |
Question 59770:
I'm having an extremely hard time with Simplifying Complex Fractions! Thank you for helping me!!
1.) 4 + 2/x
_______
x/3+1/6
2.) 1
_______
K+2
________
5
______
K^2-4
3.) 16x^2-49y^2
___________
xy
___________
4 7
___ - ___
y x
4.) 5
____ -5
3r-1
_____________
5
____ +5
3r-1
5.) -5 2
____ + ____
x+5 x+2
_______________
2 -5
____ - _____
x+2 x+4
Click here to see answer by tutorcecilia(2042) |
Question 61087This question is from textbook
: Please help. I am stuck with this problem.
Find all real or imaginary solution to the equation.
x^(-2)-9x^(-1)+18=0
It's x power negative 2 -9 power negative 1 +18=0This question is from textbook
Click here to see answer by jai_kos(139) |
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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
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