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
tino4ka555 [31]
3 years ago
6

Find the roots x2 + 4x + 5 = 0

Mathematics
2 answers:
aev [14]3 years ago
8 0

Step-by-step explanation:

x {}^{2} + 4x + 5 \\ x {}^{2}  + 5x - x + 5 = 0 \\ x(x + 5) - 1(x + 5) = 0 \\ (x - 1)(x + 5)  = 0 \\ x - 1 = 0 \:  \:  \:  \:  \:  \:  \: x + 5 = 0 \\ x = 1 \:  \:  \:  \:  \: x =  - 5

Evgen [1.6K]3 years ago
3 0

Answer:-5/6

Step-by-step explanation:

x*2+4x+5=0

add similar elements: 2x+4x=6x.

6x+5=0

Subtract 5 from both sides.

6x+5-5=0-5.

simplify.

6x=-5

divide both sides by 6

6x/6=-5/6

answer

-5/6

You might be interested in
Model subtraction of fraction:
cricket20 [7]
The entire race is 1 full race.
One full race is 1.
He ran 3/8 of 1, so he ran 3/8.
He needs to run the rest of the race.
The rest is unknown, so we call it x.
When you add 3/8 to the unknown, you get the full race.
The equation is

x + 3/8 = 1

Change 1 to a denominator of 8.

x + 3/8 = 8/8

Subtract 3/8 from both sides.

x = 5/8

Answer: He still needs to run 5/8 of the race.
5 0
3 years ago
An image is the result of an isometric transformation of its pre-image because
FrozenT [24]

the two triangles are congruent

8 0
2 years ago
Please help me with this ASAP
Digiron [165]

Answer:

270.00 divided by 32 = about $8.44

4 0
3 years ago
What are two factors of the composite number 46 other than 1 and 46?​
tester [92]

Answer:

Step-by-step explanation:

7

3 0
3 years ago
Write the explicit formula that represents the geometric sequence-2, 8, -32, 128
maks197457 [2]
Well,  since we know is a geometric sequence, we can always get the common ratio  of it by simply dividing one value by the one behind it... so let's do so, with say hmm -32 and 8  -32/8 = -4  <-- our common ratio

the first term is -2

\bf n^{th}\textit{ term of a geometric sequence}\\\\&#10;a_n=a_1\cdot r^{n-1}\qquad &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;r=\textit{common ratio}\\&#10;----------\\&#10;a_1=-2\\&#10;r=-4&#10;\end{cases}\implies a_n=-2(-4)^{n-1}
4 0
3 years ago
Other questions:
  • INVESTMENTS Determine the amount of an investment if $1000 is invested at an interest rate of 8% compounded quarterly for 2 year
    7·1 answer
  • A bag contains y fruits. A box can hold 4 times as many fruits as the bag.
    12·1 answer
  • Plz help me with these plz if u could
    14·2 answers
  • What is the excluded value of x / x^2 +2x -3​
    6·1 answer
  • A 4-lb. force acting in the direction of (4, -2) moves an object over 7 ft. from point (0, 4) to (5, -1). Find the work done to
    14·2 answers
  • What is a good minesweeper win percentage?
    10·1 answer
  • What fraction and whole number does the model represent
    13·1 answer
  • Here are the city gas mileages for 13 different midsized cars in 2008. 16, 15, 22, 21, 24, 19, 20, 20, 21, 27, 18, 21, 48 What i
    6·1 answer
  • Write as a product:<br> x2+y2+2xy –1
    9·1 answer
  • College administrators noticed that students who had higher high school GPAs tend to have higher college GPAs. The data in the t
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!