Questions on Algebra: Complex Numbers answered by real tutors!

Tutors Answer Your Questions about Complex Numbers (FREE)

Question 75943: Can you please help me in simplifying this complex fraction?
x-3/x+3 + x+3/x-3
___________________
x-3/x+3 - x+3/x-3
Click here to see answer by funmath(2933)

Question 75942: Please help me in simplifying complex fractions:
x-xy -� / 1 + x/y

Click here to see answer by funmath(2933)

Question 76463: For what value(s) of the coefficient a do the equations x^2-ax + 1=0 and x^2-x+a=0 have a common real solution?
Click here to see answer by ankor@dixie-net.com(22740)

Question 76492:

evaluate the power of 







I used the power rule, but can't get to the book's answer. 


Click here to see answer by Edwin McCravy(20054)

Question 76629: x sqrt 18 - 3 sqrt 8x^2
Click here to see answer by stargrl12566(16)

Question 76717: Can you help me Factor the Following Quadratics 7a^2 + 17a + 6
Thanks
Click here to see answer by jim_thompson5910(35256)

Question 76933: Good Morning,
20 over
Cube Root of 5
Thank you,
Nicole
Click here to see answer by Edwin McCravy(20054)

Question 76932: Hello,
#25
Square root of 2X + 3 = 2X - 3

Thank you,
Lauren
Click here to see answer by Edwin McCravy(20054)

Question 78544: A quart bottle contains a mixture that is 1/3 antifreeze and 2/3 water. A half-gallon bottle contains a mixture that is 3/4 antifreeze and 1/4 water. The contents of the two bottles are poured into a gallon jug. In the form a:b, what is the ratio of antifreeze to water in the jug?
Click here to see answer by ankor@dixie-net.com(22740)

Question 78682: express .1727272 as a common fraction in lowest terms
Click here to see answer by checkley75(3666)

Question 78677: find the decimal representation of 5/13
Click here to see answer by checkley75(3666)

Question 78732: i equals the square root of negative 1, what would be the location of 5-2i on a plane?
Click here to see answer by stanbon(75887)

Question 78944: I need to find the quotient for 2+i over 1+3i. I know about multiplying by the conjugate, and I get 5-5i over 10, which simplifies to 1-i over 2. Is this the same as 1/2-1/2 i? (This is not a textbook problem, rather it is a take-home test. My teacher said we could use the internet.)
Click here to see answer by tutor_paul(519)

Question 79297: A dog is tethered to the corner of a ten-foot-by-ten-foot square pen by a leash that is 14 feet long. In how much area outside the pen can the dog roam?
Click here to see answer by stanbon(75887)

Question 79575: Please help me solve (x-1)�=-7

Click here to see answer by checkley75(3666)

Question 79723: Finding the derivative using the defintion?
hi i would like to find out how to solve this problem. i would like to find the derivative of the function using the definition of the derivative and state the domain of the function and the domain of its derivative
g(x) = 1/x^2
thanks for any help. it is very much appreciated
Click here to see answer by jim_thompson5910(35256)

Question 79887: Can you please help me: a^2+4a+21 please help me solve this
Click here to see answer by checkley75(3666)

Question 80264: I hope you can help me with this question: 4+3i divided by 5+3i expressed in the form a+bi.
Thanks
Click here to see answer by jim_thompson5910(35256)

Question 80436: Write each expression as a complex number in the form of a + bi
5i - sq rt of -84
Thank you
Click here to see answer by tutorcecilia(2152)

Question 80485: what is an equivalent form of 2/3+ i? my four options are 3-i/4, 3-i/5, 4-i/4 and 4-i/5. please help i have no idea how to do this problem!!!
Click here to see answer by jim_thompson5910(35256)

Question 80922: I need your help with this question
Click here to see answer by checkley75(3666)

Question 80925: Answer this question too please
Click here to see answer by sofiyacherni(99)

Question 80924: I also need your help with this question
Click here to see answer by sofiyacherni(99)

Question 82649: Add or subtract complex numbers as indicated:
(3-2i)-(4-3i)

(4-2i)+(-50+3i)
Click here to see answer by jim_thompson5910(35256)

Question 82648: Add or subtract complex numbers as indicated:
(3-2i)-(4-3i)

(4-2i)+(-50+3i)
Click here to see answer by ssonygill(12)

Question 82729: Please sove 4x^2-6x+2=0
Click here to see answer by checkley75(3666)

Question 82729: Please sove 4x^2-6x+2=0
Click here to see answer by rapaljer(4671)

Question 82736: find the x-interceps and the vertex of the parabola described by the following quadratic function:
f(x)=2x^2-20x+6
Click here to see answer by vertciel(183)

Question 82775: multiply
(-1+2i)^2.
& if you can could you please show me how to plot the product on the complex plane?...if you can.
Click here to see answer by stanbon(75887)

Question 82827: i need someone to explain the steps to me in basic 'math for dummies' that my teacher is not able to do. the equation is:
x+4/x-4>_2 its one of those greater or equal to things. now, i am thinking that if i put the 2 on the other side with the equation and set it to >_0 then i can possibly graph it and get the places where it is zero on the graph. is this the way that it should be worked, am i close?
Click here to see answer by stanbon(75887)

Question 83034: Solution to the problem: x^3-5x^2-7x+51
answer choices:
4+i, 4-i
4i, -4i
4, -4
4+i, 4-i
Click here to see answer by Edwin McCravy(20054)

Question 83176: What is The square root of 2x-1= x-3
Click here to see answer by checkley75(3666)

Question 83863: m^4 - 10m^2 + 9 = 0
Click here to see answer by stanbon(75887)

Question 83890: 4t-t=6 + t <---- how do u do this?!?!?!
Click here to see answer by checkley75(3666)

Question 83950: Perform the indicated operation. Write the result in the form a + bi Show work.
(6 + 8i) - (-7 + i)
Click here to see answer by bucky(2189)

Question 84240: Find all the solutions of the equation and express in the form a + bi
3x - i = 5 + 2i
Click here to see answer by Edwin McCravy(20054)

Question 84423: factor completely 3x^3-81
Click here to see answer by tutorcecilia(2152)

Question 84442: Solve
-4t>2
Click here to see answer by bucky(2189)

Question 84871: Find all real or imaginary roots of 5x^2 + 5x + 4 = 0.
(If there is more than one root, show additional roots

Click here to see answer by jim_thompson5910(35256)

Question 84869: Solve y^4 = -2 where y is a real number.
Simplify your answer as much as possible.

Click here to see answer by rapaljer(4671)

Question 84867: Please assist I have been working on this for four days now and cannot make any progress.
Write 4u/9cd - 2c^3z^2/3ad^2 as a single rational expression

Click here to see answer by rapaljer(4671)

Question 85258: can i get to know the meaning and definition of algebra.please dont give a very complicated one which i wont be able to understand.i m 8th standard.
Click here to see answer by checkley75(3666)

Question 85699: What is the Square root of -7 minus the square root of -100?
My answer is "i square root of 7 minus 10i". Is this correct or can this problem be factored more?
Thank you!
Click here to see answer by stanbon(75887)

Question 85726: A driveway has an incline of 3m over a distance of 20m What is the angle of elevation of the driveway?
Click here to see answer by ankor@dixie-net.com(22740)

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