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
Elanso [62]
3 years ago
15

(2x - y + 3) (2x - y - 3)using identities ​

Mathematics
1 answer:
Tems11 [23]3 years ago
6 0

Step-by-step explanation:

(2x-y+3)(2x-y-3)=

4x²-2xy-6x-2xy+y²+3y+6x-3y-9=

4x²-4xy+y²-9=

(2x-y)²-9

You might be interested in
How do you write a composition about my pet​
galina1969 [7]

Answer:

like this for example

Step-by-step explanation:

my pet is a dog named Tipsy. Tipsy is an adorable brown dog that has a few black spots spread across his body and tail. Tipsy is a kelpie crossed with a border collie, and he has fluffy velvety ears. Even though Tipsy has a very strong body frame, he has a very gentle face and is always a friendly dog to those whom he knows. If a stranger approaches out house, however, Tipsy can get very aggressive. He always barks loudly to attract our attention to the approaching stranger.

Tipsy loves many things. Among these is to nuzzle his wet nose in my hands and in the hands on my parents and siblings. He craves attention most of the time because he is scared of being abandoned or ignored. I actually came across Tipsy while he was still a puppy. It appears his owner had abandoned him on the road. I found him wondering in our neighborhood. I informed my parents about the puppy. I wanted to keep him. They communicated with the local authorities so the authorities could allow us to adopt the pet.

Tipsy loves food, especially bones. Once we have fed him his regular food, we always give him a few bones on which to chew. Tipsy can actually spend whole afternoons chewing bones because he loves them so much. Whenever Tipsy is worried, he looks at us with desperate eyes that appear like he is sad. He does so while wagging his tail from one side to the other. Whenever we see him exhibiting these signs, we immediately prepare him a quick meal and some bones for him to eat.

Tipsy has also made it a habit to play with our cat, Toppy. Sometimes, Tipsy plays with and pours out the cat’s water, something that always leaves the cat giving him a vicious glare. Sometimes, the cat even meows as if to let Tipsy know that he is not very impressed with Tipsy for pouring out his water. Whenever, my dog plays with the cat’s water, I see him lifting his head as some of the cat’s water pours out from his tongue, like the way water drops from a waterfall.

Tipsy also likes the chipping sound made by the birds that reside on the trees in our compound. Whenever Tipsy hears these sounds, he raises his ears and points them towards the direction where the chirping sound is originating. One can always observe the way his eyes light up with excitement whenever the birds begin making their soothing noises.

My Pet descriptive essay writing tips:

Since this is a description essay, one is supposed to describe the unique characteristics of one’s favorite pet which in this case is a dog. Since most dogs have a name, it is prudent that one begins this description by providing the name of the dog followed by the species to which the dog belongs. Once this is done, one can begin describing the things that the dog likes and those that it does not appreciate. For instance in this essay, the writer has described the way the dog loves food and what it does whenever it needs to eat some food.

6 0
3 years ago
Solve the given differential equation by using an appropriate substitution. The DE is a Bernoulli equation.
Mama L [17]

Multiplying both sides by y^2 gives

xy^2\dfrac{\mathrm dy}{\mathrm dx}+y^3=1

so that substituting v=y^3 and hence \frac{\mathrm dv}{\mathrm dv}=3y^2\frac{\mathrm dy}{\mathrm dx} gives the linear ODE,

\dfrac x3\dfrac{\mathrm dv}{\mathrm dx}+v=1

Now multiply both sides by 3x^2 to get

x^3\dfrac{\mathrm dv}{\mathrm dx}+3x^2v=3x^2

so that the left side condenses into the derivative of a product.

\dfrac{\mathrm d}{\mathrm dx}[x^3v]=3x^2

Integrate both sides, then solve for v, then for y:

x^3v=\displaystyle\int3x^2\,\mathrm dx

x^3v=x^3+C

v=1+\dfrac C{x^3}

y^3=1+\dfrac C{x^3}

\boxed{y=\sqrt[3]{1+\dfrac C{x^3}}}

6 0
3 years ago
PLEASE ANSWER ASAP FOR BRIANLEST DUE IN 3 MIN!!!!!!!!!!!!!!!!!!!!!!!!!!!
bezimeni [28]

Answer: 3rd one

Step-by-step explanation:

5 0
3 years ago
3 divide by what number equals 5
marysya [2.9K]
First write the equation
3/n = 5

Multiply both sides by n
3/n * n = 5 * n

Simplify
3 = 5 * n

Divide both sides by 5
3/5 = 5 * n/5

Simplify
3/5 = n

Divide
0.6 = n


So 3/0.6 = 5
4 0
4 years ago
Bob puts $500 into an account that pays 5% interestc ompounded anually. What is the balance after 5 years?
Maru [420]

Answer:

b

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What’s the answer ????
    15·1 answer
  • Solve T=C(7+AB) for B​
    9·1 answer
  • Is it right?? Isabella
    14·1 answer
  • Which fraction is less than 3/4? 7/8 7/12 15/16 17/20
    6·2 answers
  • Simultaneous linear equations
    13·1 answer
  • The mean amount of sleep needed for adults is 503 minutes per night. If the standard deviation for adult sleepers is [s]. What i
    11·1 answer
  • Find the smallest number to be added to 11650 so that the sum will be a perfect square ​
    6·1 answer
  • Hint: To be collinear, show that : AB
    11·2 answers
  • What is the value of Y in this triangle
    13·2 answers
  • Simplify (step by step too)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!