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

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 Algebra: Complex Numbers Solvers Lessons Answers archive Quiz In Depth

 Question 217709: Hi, i was wondering if someone could help me with this problem. Find the derivative of the following: (x^2)^sin(x) Thanks in advance. Click here to see answer by Alan3354(30993)

 Question 217736: What is the solution to the problem (x+5)^(1/2) + (x-5)^(1/2) = 10 Click here to see answer by Alan3354(30993)

 Question 217872: Question #1 6x + 5y +2z = 830 3x + 7y+4z=820 2z-22=x HELP! Click here to see answer by Alan3354(30993)
 Question 217872: Question #1 6x + 5y +2z = 830 3x + 7y+4z=820 2z-22=x HELP! Click here to see answer by MathTherapy(1423)

 Question 217939: ALRIGHT. SO THE PROBLEM IS WRITTEN AS FOLLOWS: PERFORM AND GIVE THE ANSWER IN STANDARD FORM. IM NOT SURE WHERE TO GO ON THIS ONE. WE CANT USE CALCULATORS ON OUR TESTS AND IM NOT SURE HOW TO DO THESE WHEN I DONT HAVE PERFECT SQUARES. IVE TRIED BREAKING THE SQUARES DOWN TO AND AND I KNOW THEY ARE BOTH IMAGINARY NUMBERS, BUT THATS AS FAR AS I CAN GET. CAN SOMEONE WALK ME THROUGH THE SOLUTION? Click here to see answer by RAY100(1637)

 Question 218344: write the rectangular equation x^2 + y^2 = 6 in polar form Click here to see answer by user_dude2008(1861)

 Question 218402: Algebraically solve for the limit as x approaches 0 of ((2+x)^3 - 8)/x Click here to see answer by jsmallt9(3296)

 Question 218640: Find the value of X and Y in each of the following 3x(2+5i)-4(2x-3yi)=12+13i Click here to see answer by Alan3354(30993)

 Question 218757: The length of a picture frame is 3 in. greater than the width. The perimiter is less than 52in. Describe the dimentions of the frame. Click here to see answer by drj(1380)
 Question 218757: The length of a picture frame is 3 in. greater than the width. The perimiter is less than 52in. Describe the dimentions of the frame. Click here to see answer by MathTherapy(1423)

 Question 218953: X to the power of 3 or cubed + 216 = 0 ::::: we factor out (x+6) and are left with (x squared -6x + 36) ::: we know the answer is 3 plus or minus 3(times square root of 3i) but can't get there ::: Click here to see answer by Alan3354(30993)

 Question 219581: 6 _____ 5 + i i am suppose to write the result in standard form. Click here to see answer by jim_thompson5910(28593)

 Question 221155: I have an equation (2x^2)-7=0. The answer I have been given is the square root of 14 over 2. I'm unsure why. Could you walk me through the steps please? Click here to see answer by stanbon(57332)
 Question 221155: I have an equation (2x^2)-7=0. The answer I have been given is the square root of 14 over 2. I'm unsure why. Could you walk me through the steps please? Click here to see answer by chibisan(131)
 Question 221155: I have an equation (2x^2)-7=0. The answer I have been given is the square root of 14 over 2. I'm unsure why. Could you walk me through the steps please? Click here to see answer by rapaljer(4667)
 Question 221155: I have an equation (2x^2)-7=0. The answer I have been given is the square root of 14 over 2. I'm unsure why. Could you walk me through the steps please? Click here to see answer by MathTherapy(1423)

 Question 221202: how many license plate combinations are possible in pennsylvania if there are three letters in the beginning and four numbers at the end Click here to see answer by Alan3354(30993)

 Question 220632: Simplify the following and give answers in the form a+bi. (3 cos(pi/8) + 3i sin(pi/8))^4 Click here to see answer by Alan3354(30993)

 Question 221232: Simplify the following and give the answer in the form a+bi. (1 - i)^8 (use Euler form). Thanks in advance. Click here to see answer by Alan3354(30993)

 Question 221736: find the complex number a + bi such that 5a + 3b = 1 and -5a = 7 + 4a Click here to see answer by rapaljer(4667)

 Question 221735: find the complex number a + bi such that 5a + 3b = 1 and -5a = 7 + 4a Click here to see answer by rapaljer(4667)

 Question 222195: what is i to the third power and why? Click here to see answer by solver91311(16877)

 Question 222298: Hello, I am stumped on the following question. Appreciate the help. Solve x^3-4x^2-2x+20=0 over the set of complex numbers. Click here to see answer by solver91311(16877)

 Question 222341: perform the operation i/3-2i + 2i/3+8i and write the result in standard form Click here to see answer by jsmallt9(3296)

 Question 222490: plz help me solve this question. Evaluate the expression [(√ -7)/( (√ -5)(√ -1)]and write the result in the form a+bi. the real number a equals ___________ the real number b equals ___________ Click here to see answer by stanbon(57332)
 Question 222490: plz help me solve this question. Evaluate the expression [(√ -7)/( (√ -5)(√ -1)]and write the result in the form a+bi. the real number a equals ___________ the real number b equals ___________ Click here to see answer by Alan3354(30993)

 Question 222848: how do i know if i get the right answer? a lot of times on tests, i don't know if i have the right answer or not, usually on the more difficult questions. here's one question: (2+3i)+(-4+5i)-(9-3i)/3. the slash is dividing. the answer is -5-9i i beleive. what i wanna know, is how do you expand this question? how is it solved? thanks. Click here to see answer by jim_thompson5910(28593)
 Question 222848: how do i know if i get the right answer? a lot of times on tests, i don't know if i have the right answer or not, usually on the more difficult questions. here's one question: (2+3i)+(-4+5i)-(9-3i)/3. the slash is dividing. the answer is -5-9i i beleive. what i wanna know, is how do you expand this question? how is it solved? thanks. Click here to see answer by stanbon(57332)