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
lesantik [10]
3 years ago
8

How do I factor x^2+4x+20

Mathematics
1 answer:
icang [17]3 years ago
8 0
Its like x² + 4x +20 = 0,
x = [-4 + √[(4²) - (4*1*20)]]/(2*1) = [-4 + √(16-80)]/2 = [-4 + √(-64)]/2 = [-4 + 8√(-1)]/2 = -2 + 4i,
x = [-4 - √[(4²) - (4*1*20)]]/(2*1) = [-4 - √(16-80)]/2 = [-4 - √(-64)]/2 = [-4 - 8√(-1)]/2 = -2 - 4i,
here i = √(-1), its a complex number.
so solution is a complex number,
x = -2 - 4i & -2 + 4i.
You might be interested in
...................................................
butalik [34]
The median is 4.

Hope this helps
7 0
3 years ago
Read 2 more answers
Complete the following ratio table
Nady [450]
Could help if you showed the rest of the table
6 0
3 years ago
Help me plz :3 :) :x :P
Sonbull [250]
Yes, she is correct
1/2 + 1/2 = 1 or 0.5 + 0.5 = 1 so half of a wall plus half of a wall equals one hole wall.

That's as simple as I can put it mathematical reasoning. I hope this helps
7 0
4 years ago
Joshua is going to invest $9,000 and leave it in an account for 5 years. Assuming the interest is compounded continuously, what
zimovet [89]
I think it is 72.2 percent because 9x5=45k and 45k-32.5k= 12.5k so 32.5 percent of 45 is 72.2 (rounded to the nearest tenth) btw I feel lonely
3 0
3 years ago
How to solve please help.<br> <img src="https://tex.z-dn.net/?f=7%20x%5E%7B2%7D%208x%5Calpha%20%5Csqrt%7Bx%7D%207" id="TexFormul
DedPeter [7]
The answer should be 56V7 ax^3 V7
5 0
3 years ago
Other questions:
  • Everything. I DON'T HAVE A CLUE.
    9·1 answer
  • Solve each two-step equation.<br> 7<br> –5x+3=-7<br> What’s the answer
    12·2 answers
  • millie needs the average height of the plants she is buying to be at least 73 inches. she has selected three plants that are 70,
    12·1 answer
  • Three bacteria are ina dish. Each hour the number of bacteria increases by four. If at the end of the first hour there are 12 ba
    11·1 answer
  • Nikki has 3 pieces of yarn. The first piece 5/6 feet long, the second piece is 5/3 feet long and the third piece is 3/2 feet lon
    10·2 answers
  • 3x+4y=10 solve for y
    9·1 answer
  • A line that goes across the circle is called
    14·2 answers
  • PLEASE HELP RIGHT NOW
    12·1 answer
  • Select all equations that have graphs with the same y-intercept. y = 3x - 8 y = 3x - 9 y = 3x + 8 y = 5x - 8 y = 2x - 8 y = ⅓x -
    8·2 answers
  • Find the area of the following figure. Explain how you found your answer.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!