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
PIT_PIT [208]
4 years ago
15

Factor and simplify: (a^2+2a)^2-2(a^2+2a)-3

Mathematics
1 answer:
Alinara [238K]4 years ago
8 0
The answer is a^4+4a^3+2a^2-4a-3
You might be interested in
The lengths of text messages are normally distributed with a population standard deviation of 4 characters and an unknown popula
umka21 [38]

Answer:

The answer is "(25.32, 30.68)"

Step-by-step explanation:

Given:

\bar x = 28\\\\ \sigma = 4\\\\n =26\\\\

When 98\% confidence level so, the z:

\alpha = 1 - 98\% = 1 - 0.98 = 0.2\\\\\frac{\alpha}{2} =\frac{0.02}{2} = 0.01\\\\Z_{\frac{\alpha}{2}} = Z_{0.01} = 1.645\ \ \  ( Using \ z \ table )\\\\

E = Z_{\frac{\alpha}{2} \times ( \frac{\sigma}{\sqrt{n}})  

= 1.645 \times (\frac{4}{\sqrt{26}})\\\\=2.68

When  98% confidence interval estimate of the population mean  is,

\bar x - E < \mu < \bar x + E\\\\28 - 2.68 <  \mu < 28 + 2.68\\\\25.32 <  \mu < 30.68\\\\(25.32,  30.68)\\\\

7 0
3 years ago
What does the "+8" mean in the expression 2x + 8?
tigry1 [53]

Answer:

you have to add 8

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
the tanks of all of sara's yard trimmers are empty how much fuel does sara need to fill the tanks of all the trimmers
Alja [10]
You have to send me the WHOLE problem
5 0
3 years ago
What's equivalent to 2/5?
choli [55]

Answer: 4/10 , 6/15, 8/20,

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Four times the sum of a number is 2 is equal to 6
lapo4ka [179]

Answer:

4*(x+2)=6

Step-by-step explanation:

* is multiply four times is 4*

the sum of a number is 2 is (x+2) is equal to 6

6 0
3 years ago
Other questions:
  • Find two functions defined implicitly by the given relation y^2-64x^2=64
    6·1 answer
  • Matt has $3 left in his pocket. He spent $6
    12·1 answer
  • The price of a car was increased from $3,600 to $4,500. What was the percent of the increase?
    9·2 answers
  • Kaitlyn has 7 white chips, 5 red chips, and 8 blue chips in a bag.
    14·1 answer
  • 16. A 20.25-gallon gasoline tank is 3/5 full. How many gallons<br> will it take to fill the tank?
    10·1 answer
  • What is h2=0.36 <br><br><br> I will give 20 points
    10·1 answer
  • 14. A satellite orbits 22, 300 miles above the equator. It completes one revolution in 24 hours. Assume that the radius of the E
    11·1 answer
  • 2x+3y=5x−y what is the answer?
    10·1 answer
  • I WILL GIVE 100 POINTS IF YOU ANSWER THE QUESTIONS BELOW
    6·1 answer
  • An amount of R351 is made up with 114 coins (R2 coins and R5 coins only). How many R2 coins are there? How many R5 coin are ther
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!