|
Tutors Answer Your Questions about Complex numbers (FREE)
Question 194823: Find the difference of the complex numbers.
Part 1: Rewrite the expression so that you are subtracting the two real numbers and the two imaginary numbers.
Part 2: Subtract the two real numbers and then subtract the two imaginary numbers. Write your answer in the form a+bi. Show your work.
Click here to see answer by checkley77(7172)   |
Question 194826: Find the quotient of the complex numbers.
Part 1: Write the quotient as a fraction.
Part 2: What is the conjugate of the denominator of the fraction?
Part 3: MultipPly the numerator and denominator by the conjugate of the denominator in order to rationalize the fraction. Use FOIL process to multiply the numerators and then to multiply the denominators. Combine like terms when possible. Show your work.
Part 4: Factor the GCF in the numerator and reduce the final answer. Leave your answer as a fraction in lowest terms. Show your work.
Click here to see answer by ankor@dixie-net.com(6707)  |
Question 195529: I'm trying to solve the following problem, but get stuck half way through it, can you please help me?
16 + 4i divided by 16 - 4i
I've been trying the following, I tried multiply both the numerator and denominator by the conjugate of the denominator and this is as far as I get before getting stuck (16+4i) (16+4i) using the foil method I get 256 +64i+64i+16i^2. When I do the same for the denominator (16-4i)(16+4i) using the foil method I get 272. I combine the numerator and get the following 240+128i and then this is where I'm stuck I don't know what to do after this 240+128i/272. Can you please help me?
Click here to see answer by jim_thompson5910(13811) |
Question 195529: I'm trying to solve the following problem, but get stuck half way through it, can you please help me?
16 + 4i divided by 16 - 4i
I've been trying the following, I tried multiply both the numerator and denominator by the conjugate of the denominator and this is as far as I get before getting stuck (16+4i) (16+4i) using the foil method I get 256 +64i+64i+16i^2. When I do the same for the denominator (16-4i)(16+4i) using the foil method I get 272. I combine the numerator and get the following 240+128i and then this is where I'm stuck I don't know what to do after this 240+128i/272. Can you please help me?
Click here to see answer by Earlsdon(4900) |
Question 197213: If f(x)= 3x^2 -27/ 18x + 30 and g(x) = x^2 -7x +12/ 3x^2 -7x -20 , find f(x) divided by g(x) for all values of x for which the expression is defined and express your answer in simplest form. Help is appreciated! Thank you!
Solution:
f(x)= ------(1)
g(x) =  ------(2)
f(x)/g(x)==> f(x)*(1/g(x))
==> 
==> 
==> 
==> 
==> 
==> 
==> 
==> 
So the simplest form is 
Click here to see answer by stanbon(26367) |
Question 197213: If f(x)= 3x^2 -27/ 18x + 30 and g(x) = x^2 -7x +12/ 3x^2 -7x -20 , find f(x) divided by g(x) for all values of x for which the expression is defined and express your answer in simplest form. Help is appreciated! Thank you!
Solution:
f(x)=------(1)
g(x) = ------(2)
f(x)/g(x)==> f(x)*(1/g(x))
==>
==>
==>
==>
==>
==>
==>
==>
So the simplest form is
Click here to see answer by mathsteacher(28) |
Question 197497: respected sir & madum,
1] In a weight ;ifting competition,the total weight of Joe's tow lifts was 750 pounds.If twice the weight of his first lift was 300 pounds more than the weight of his second lift,what was the weight ,in pounds,of his first lift ?
plz solve my difficulty as soon as poosible...
thank u.
regards,
Binita.
Click here to see answer by Alan3354(6153)  |
Question 197763: I cannot get this answer right. my teacher has provided the answer and we have to do the figuring. I keep coming up with a different answer than provided; therefore, my figuring is wrong. The problem is:
1/x-1/x-1=6.
The answer provided is{-2,3} How is this answer figured, I keep getting a fraction for an answer. Please help
Click here to see answer by RAY100(1637) |
Question 198255: respected sir,
1] AB + CD = AAA, where AB and CD are two-digit numbers and AAA is a three digit number; A, B, C, and D are distinct positive integers. In the addition problem above, what is the value of C?
plz help me..
regards,
binita
Click here to see answer by vleith(1983) |
Question 197764: Find the exact solution(s) to each problem. If the solution(s) are irrational, then also find approximate solution(s) to the nearest tenth.
Time in the air. A ball is tossed into the air from a height of 12 feet at 16 ft/sec. How long does it take to reach the earth?
Click here to see answer by arallie(162) |
Question 198564: Solve by substitution or elimination method:
4x – 5y = 14
-12x + 15y = -42
3x – 2y = 26
-7x + 3y = -49
-2x + 6y = 19
10x – 30y = -15
I had solved the equations, but solved them wrong. I am very confused. Please help me
Click here to see answer by solver91311(5106)  |
Question 199892: hi i have a really big final comming up and have lots of questions. first off,
i only somewhat understand complex numbers. here is the question:
{{the square root of -25 + 3}}
*Note : -25 + 3 is not all in the radical, only -25.
i do know how to solve this far:
the square root of -25= 5i + 3
*so how do you add this?
Click here to see answer by jim_thompson5910(13811) |
Question 200449: Wich of the following expressions represents the product of 3 less than twice x and 2 more than the quantity 3 times x?
A. –6x2 + 25x + 6
B. 6x2 + 5x + 6
C. 6x2 – 5x + 6
D. 6x2 – 5x – 6
E. 6x2 – 13x – 6
Click here to see answer by edjones(3330)  |
Question 201309: 6
_____________
a^-3a-54
+
10
______________
a^+5a-6
Hi we are talking about complex fractions. For some reason I cannot figure it out can you please help me!!! Above is a problem that was given to solve. Will you explain it please?
Thanks
Click here to see answer by nerdybill(2453)  |
Question 202104: Can anyone help with ANY of these? Please!
1.Complete each exercise leaving imaginary answer in i form.
3 squareroots of -24
2.Complete each exercise leaving imaginary answer in i form.
(3 - i) + (1 - 2i)
3.Complete each exercise leaving imaginary answer in i form.
(7 + 3i) - (2 +3i)
4.Complete each exercise leaving imaginary answer in i form.
The squareroot of -25 + the squareroot of -16 + the squareroot of -9
= ____
5.Complete each exercise leaving imaginary answer in i form.
(5 -i)(5 +i)
6.Complete each exercise leaving imaginary answer in i form.
(-3 - 5i)(-3 + 5i)
7.Complete each exercise leaving imaginary answer in i form.
5-6i^11
8.Complete each exercise leaving imaginary answer in i form.
10(4-3i)
9.Complete each exercise leaving imaginary answer in i form.
i^12 + 1
10.Complete each exercise leaving imaginary answer in i form.
(5-2i^2)^2
11.Complete each exercise leaving imaginary answer in i form.
6 / 2i
12.Complete each exercise leaving imaginary answer in i form.
(2 + the square root of -3) (2 - the squareroot of -3)
___________________________ ___________________________
(2) (2)
* It doesn't come out right when i submit it but, each equation is over 2.
13.Complete each exercise leaving imaginary answer in i form.
4 + i
________
3 - 2i
Click here to see answer by stanbon(26367) |
|
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
|
| |
