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Complex Numbers
Page 8
Questions (982)
If f(x) is a polynomial with real coefficients such that f(4+3i)=31+16i, then f(4−3i)=a+bi. What is the value of a+b
2 answers
asked by
Tony
753 views
Can someone please give me a step by step answer on how to find the complex cube roots of 8(cos(4π/5)+isin(4π/5))? I need to
3 answers
asked by
Kate
693 views
I don't understand how to convert -3-4i to polar coordinates. I need to know how so I am ready for my trig final next year. Can
3 answers
asked by
Kate
402 views
Can someone please show me step by step how to calculate the modulus and the argument for these complex numbers? I have a trig
2 answers
asked by
Kate
499 views
Let a,b,c be complex numbers satisfying
a+b+c=abc=1 and (ab+bc+ac)/3=(1/a^2)+(1/b^2)+(1c^2) The sum of absolute values of all
1 answer
asked by
Mahler
486 views
If f(x) is a polynomial with real coefficients such that f(7+5i) = 39 + 13i, then f(7−5i) = a + bi. What is the value of a+b?
1 answer
asked by
Shin
397 views
For z1 = 4cis(7pi/6)and z2 = 3ci(pi/3), find z1 · z2 in rectangular form.
A.12 − 12i B.-12 − 12i C.12 + 12i D.12i E.-12i
2 answers
asked by
Chris
945 views
What is the rectangular form of the complex number z^4 if z = 2cis 60°?
1 answer
asked by
Chris
663 views
Convert the complex number c=3cis 0.25 into rectangular form.
2 answers
asked by
Jane
879 views
How does this go from x^2+ to 2i, explain.
3 answers
asked by
phyllys
296 views
what would the modulus be for -6+ 4i and write it in simplified radical form?
1 answer
asked by
Ashley
417 views
Simplify and write in standard form.
1.) (radical 3 + i radical 15)(radical 3 - i radical 15) 2.) 8 + 16i / 2i Thanks again
2 answers
asked by
mikey
625 views
how is 7-3i + 7+3i = 14/1
we're doing sum and product of roots, and i don't get how this is equal to 14
3 answers
asked by
jake
333 views
i^59 and 4
____ 3+5i
1 answer
asked by
Wanda
304 views
Simplify.
4i (imaginary number)
4 answers
asked by
Anonymous
411 views
Evaluate (7+3i) - (-2 -5i)
1 answer
asked by
Ashley
283 views
2. Choose the point that lies on the curve r = 2 – 3 sin θ.
A. (-5, 3π/2) B. (–2, π) C. (1, π/2) D. (5, π/2 3. Which of
1 answer
asked by
Erick
591 views
Simplify.
4i ( What are the rules for simplifying these imaginary numbers?)
1 answer
asked by
Anonymous
374 views
(2-3i)(3+5i)
7 answers
asked by
Jackie
276 views
-15-√-18/33
2 answers
asked by
Jackie
703 views
(-2+√-11)^2
1 answer
asked by
Jackie
237 views
3/4+i
1 answer
asked by
Jackie
250 views
(-2+6i)+(4-i)
1 answer
asked by
Jackie
194 views
Simplify: (1-i)^3
Here's how I break it down using the formula (x-y)^3 but I just don't know how to get to the final answer.
5 answers
asked by
yengiang
294 views
When dealing with imaginary and complex numbers, are there 2 solutions?
I.e.: x^2=4 x=2,-2 For: x^2=-4 x=2i or -2i ? (Is there a
3 answers
asked by
Bart
475 views
(i)(4i)(-4i)
it is 4i^2(-4i) = -16i^3 ? If it is not right, please help. thanks!
2 answers
asked by
John
916 views
write the expression in form of a+bi
(-2-3i)(1+4i)
1 answer
asked by
suzy
288 views
3x + 2iy =6 + 10i
2 answers
asked by
merril
1,159 views
express in terms of i
square -225 + square -49
1 answer
asked by
TB
282 views
(x^2+11)/(3-x) x=4i
1 answer
asked by
katie
250 views
Preform the indicated operations and write the results in standard form. ( i= imaginary number)
√-12(√-4-√2)
1 answer
asked by
katie
397 views
Help?
I Kind of understand this , but still I am stuck. 1. (2+4i)/3-i 2. 3√-50 + -72 3.(-4+√-15)^2 4.-4+√-20
4 answers
asked by
Unknown.
329 views
I got this answer for a problem, and I'm not sure if it's right.
Can someone tell me if I'm correct? 1.(2+4i / 3-i) = 6/7+5/7i
6 answers
asked by
Tara
300 views
Check Answers Please?
1. 5+(2+3i) + (-3-7i) = 4 + -4i 2. (5-10i) - (2+i) = 7 - 9i 3. -5i(2-3i) = -10i - 15 4. (2+3i)(-3-7i) =
7 answers
asked by
Sara
624 views
Help?
1) 3i-10/8i-5 2) 11i^2+1/-12i-8
5 answers
asked by
Torrio
366 views
Find the product of (6+3i) (4-2i).
1 answer
asked by
Anonymous
305 views
6. Compute the modulus and argument of each complex number. I did a-c and f.
D. -5 E. -5+5i G. -3-4i 7. Let z= -5sqrt3/2+5/2i and
4 answers
asked by
BreAnne
1,596 views
Hello! I'm stuck on how to do this problem and would appreciate some help!
Choose a non-zero complex number c for f(z) = z2+ c.
3 answers
asked by
Anonymous
1,007 views
Hello! I'm stuck on how to do this problem and would appreciate some help!
Choose a non-zero complex number c for f(z) = z2+ c.
2 answers
asked by
l
593 views
write 2+2 squareroot of 3i in trig form.
1 answer
asked by
ky
320 views
write 2=5cis 11pie/6 in standard form.
6 answers
asked by
jenna
351 views
express in terms of i
- sqrt -496
2 answers
asked by
Lueshelle
681 views
sqrt(-24)
1 answer
asked by
sherry
284 views
What type of number is 3 + 4i?
irrational real imaginary complex
3 answers
asked anonymously
32 views
What is the answer and how did you do for this question? Please I really need help! :(
Express in rectangular form:
1 answer
asked by
Scarlet
382 views
Which of the following re-expresses the negative square root √-40 as a complex number in the standard form a + bi?
3 answers
asked anonymously
78 views
Which of the following re-expresses the negative square root √-40 as a complex number in the standard form a + bi?
2√10
3 answers
asked anonymously
82 views
Which of the following re-expresses the negative square root -6√-20 as a complex number in the standard form a + bi?
-12i√5
3 answers
asked anonymously
59 views
Both bots got this wrong:
Which of the following re-expresses the negative square root -6√-20 as a complex number in the
3 answers
asked by
oobleck
153 views
please help me simplify
∛(-1)
4 answers
asked by
Lavern
470 views
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