1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bezimeni [28]
4 years ago
10

Solve the equation exactly in the complex number system. x^3+4x^2+9x+36=0

Mathematics
1 answer:
daser333 [38]4 years ago
5 0
Factor by grouping.
  0 = (x^3 +4x^2) +(9x +36) = x^2(x+4) +9(x+4) = (x^2+9)(x+4)

The first factor is the difference of squares (in complex numbers), so the form for factoring that can be used:
  a^2 - b^2 = (a -b)(a +b)
Here, a=x, b=3i.

Then the factorization in complex numbers is
  0 = (x -3i)(x +3i)(x +4)
Solutions are the values of x that make these factors be zero.

  x = -4, -3i, 3i
You might be interested in
suppose a population of 250 crickets doubles in size every six months. How many crickets will there be after two years?
lord [1]

double every 6 months 

in 6 months there would be 250*2 = 500 crickets

 in 1 year there would be 500*2 = 1000 crickets

in 1.5 years there would be 1000 *2 = 2000 crickets

 in 2 years there would be 2000 *2 = 4000 crickets

4 0
3 years ago
Which numbers are equivalent to 3/10
Sedbober [7]

Answer:

Multiply numerator and denominator with same number to gwt the answers . There are infinitely many numbers

3/10 × 2/2 = 6/20

3/10 × 5/5 = 15/50

3/10 × 10/10 = 30/100

And so on

8 0
4 years ago
Find the measure of x<br> please no bots:(it’s easy
IceJOKER [234]

Answer:

60

Step-by-step explanation:

There are 6 equal angles that add up to 360 in that diagram. That means that if you divide 360 by 6, then you get 60.

Hope that this helps!

Edit: Thanks for the Brainliest!

6 0
3 years ago
Fernando is 6 feet tall.if 1 inch is approximately 2.54 cm,what is fernandos height in cm.
otez555 [7]

Answer:

182.88cm

Step-by-step explanation:

i looked it up

8 0
3 years ago
Read 2 more answers
What is 2350million in standard form
julia-pushkina [17]

Answer:

2.35×10^9

2350 million = 2,350,000,000

1 million= 1,000,000

5 0
3 years ago
Read 2 more answers
Other questions:
  • What symbol makes the comparison true
    9·1 answer
  • Please help........................................
    6·1 answer
  • A clerk has 4 different letters that need to go in 4 different envelopes. What is the probability that all 4 letters are placed
    7·1 answer
  • Solve the equation algebraically x^2=180
    12·1 answer
  • Please Help  Me With These QUESTIONS!!!!!!! I Give Thanks!!!!!!!
    13·1 answer
  • Find all the real square roots of 64/169
    8·2 answers
  • Molly, page and demi share 42 sweets in the ratio 3:2:1 how many sweets do the all get each
    12·1 answer
  • Factorise fully 6m^2+8mp
    13·1 answer
  • Can someone plz help me on this thank you sooo much
    9·1 answer
  • Distributive property.<br><br> 1. -5(y + 1) + 6y<br> 2. 4(z-2)+3z<br> 3. (f-5)(-2)+ 11f
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!