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
marysya [2.9K]
3 years ago
14

How do u multiply x^2-4 over x^2-1 times x+1 over x^2+2x

Mathematics
2 answers:
Anna11 [10]3 years ago
6 0
\frac{x ^ 2-4 }{x ^ 2-1}*\frac{ x + 1 }{x ^ 2 +2 x}=\frac{x ^ 2-2^2 }{x ^ 2-1}*\frac{ x + 1 }{x(x +2 )} =\\ \\ \\ =\frac{(x -2)\not(x+2)^1 }{(x -1)\not(x+1)^1}*\frac{ \not(x + 1)^1 }{x\not(x +2)^1 }= \frac{ x-2 }{x(x-1)} \\ \\ \\ \\a^2-b^2 =(a-b)(a+b)


mixer [17]3 years ago
5 0
(X2-4)/(x2-1).  *  (x+1)/(x2+2x)
[(x-2)(x+2)]/[(x-1)(x+1)]. * (x+1)[x(x+2)]
(x-2)/(x-1) * 1/x
(x-2)/(x2-x)
You might be interested in
Tan^2 70° -sec^2 70°​
kipiarov [429]

Answer:

-1

Step-by-step explanation:

We need to find the value of tan² 70° -sec² 70°​.

We know that,

\sec^2\theta-\tan^2\theta=1 ...(1)

We can write the given expression as :

tan² 70° -sec² 70° = -(-tan² 70° +sec² 70°)

=-(sec² 70°-tan² 70°)

Using identity (1)

=-(1)

= -1

Hence, the value of the given expression is -1.

4 0
2 years ago
HELP! 25 POINTS! I ONLY HAVE 3 MINS LEFT! BRAINLIEST FOR BEST ANSWER! GUARANTEED 5-RATING AND THANKS AS WELL! HELP PLEASE!
stiv31 [10]

Domain represents the possible x values for the function.

It is...

x≤-2 and x>2

answer: a,b,c,f

3 0
2 years ago
Find the other endpoint of the line segment with the given endpoint and midpoint: Endpoint - (1, 3) Midpoint - (0, 0)
Kobotan [32]

Answer:

The other endpoint of the line segment = (-1, -3)

Step-by-step explanation:

A segment has:

  • Endpoint: (1, 3)
  • Midpoint: (0, 0)

Let (x, y) be the other endpoint of the line segment

\frac{\left(1\:+\:x\right)}{2}=0

\mathrm{Multiply\:both\:sides\:by\:}2

\frac{2\left(1+x\right)}{2}=0\cdot \:2

1+x=0

x=-1

\frac{\left(3+y\right)}{2}=0

\mathrm{Multiply\:both\:sides\:by\:}2

\frac{2\left(3+y\right)}{2}=0\cdot \:2

3+y=0

y=-3

Therefore, the other endpoint of the line segment = (-1, -3)

4 0
3 years ago
There are 9 marbles representing 3 different colors. Write a problem where 2 marbles are selected at random without replcement a
Nata [24]
There are 9 marbles in the bag. We pick 2 without replacement and get a probability of 1/6.

Each draw of a marble has a probability associated with it. Multiplying these gives 1/6 so let us assume the probabilities are (1/3) and (1/2).

In order for the first draw to have a probability of 1/3 we need to draw a color that has (1/3)(9)=3 marbles. So let's say there are 3 red marbles. The P(a red marble is drawn) = 1/3.

Now that a marble has been drawn there are 8 marbles left. In order for the second draw to have a probability of 1/2 we must draw a color that has (1/2)(8) = 4 marbles. So let's say there are 4 blue marbles out of the 8.

Since there are 9 marbles to start and we have 3 red marbles and 4 blue marbles, the remaining 2 marbles must be a different color. Let us say they are green.

The problem is: There are 3 red marbles, 4 blue marbles and 2 green marbles in a jar. A marble is picked at random, it's color is noted and the marble is not replaced. A second marble is drawn at random and its color noted. What is the probability that the first marble is red and the second blue?
8 0
3 years ago
22) John ordered a large pizza for $19.50. How much
siniylev [52]

i believe its $21.84 because 12% would be $2.34

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • For the quadratic function find the x intercept <br><br>f(x)=-(x+3)^2+4​
    14·1 answer
  • Rewrite log; x = 4 in exponential form.
    10·1 answer
  • If u answer this correctly u will get a thanks and show
    8·2 answers
  • SORRY PLEASE DONT BAN ME BRAINLY!!!!!!
    8·2 answers
  • Divide a 6 and 3/4 inch line into three parts so that each part is 1/4 inch shorter than the one before it.
    13·1 answer
  • A line contains the points<br> ( - 2, – 8) and (3,5).<br> What is the slope of the line?
    12·2 answers
  • What is the answer for 5÷27
    12·2 answers
  • Tell whether the angles are adjacent or vertical. Then find the value of x.
    14·1 answer
  • Find the surface area of a cylinder with a height of 4 yd and a base radius of 3 yd.​
    13·1 answer
  • Round 34,571 to the place value of the underlined digit. underlined digit is 5
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!