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
egoroff_w [7]
3 years ago
9

2x(x - 3) + 7(x - 3) Can I have an explanation on how it works factors

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
8 0

Answer:

Step-by-step explanation:

2x(x - 3) + 7(x - 3)

2x^2 - 6x + 7x - 21

reduce

2x^2 + x - 21

if this is equal to 0 then:

2x^2 + x - 21 = 0

factored:

(2x + 7)(x - 3) = 0

How that was done:

Divide the (2x^2) into (2x) and (x).

Divide the (-21) into (+7) and (-3). You choose these numbers so that their sum, when multiplied by (2x) and (-3), adds up to (+x).  

You might be interested in
Please help! I put a screenshot :) I would like<br> a detailed answer please :) 55 points :)
seropon [69]

Method A: If we count, we see that the answer is 31.

Method B: 19 - -12 = 31. We can even do -12 - 19 and we'll get the same answer: -31, and the absolute value of -31 is 31.

Both methods will give you the same answer.

6 0
3 years ago
Read 2 more answers
Which number line shows the solution to the inequality 4x+ 5 &gt; 9​
tensa zangetsu [6.8K]

PLEASE ME

Which of the following BEST explains why Japan has a high gross domestic product when it has few natural resources?

A.

Japan can purchase many goods internationally to make up for their lack of natural resources.

B.

Japan relies on natural resources found in the ocean to make up for its lack of resources on land.

C.

Japan has invested in capital goods and human resources to make it a larger producer of finished goods for trading.

D.

Japan has placed tariffs on foreign goods which allows consumers to pay lower prices because goods are produced domestically.

7 0
3 years ago
PLS HELP<br> Solve the equation for m. Show your work.<br> 19+m=30
Lena [83]

Answer:

11

Step-by-step explanation:

19 + m = 30

m = 30 - 19

m = 11

Hope it helps

8 0
3 years ago
Read 2 more answers
What is the value of y in the equation 5x + 2y = 20, when x = 0.3?
garik1379 [7]
Y=9.25 because 5x0.3=1.5 you move constents to the right hand side and it becomes -1.5 then you do the rest and the answers is 9.25
8 0
3 years ago
Read 2 more answers
The average distance from Earth to the sun is about 9.3×10^7 miles. The average distance from Mars to the sun is about 1.4×10^8
diamong [38]

Move the decimal to the right (you go to the right since the exponent is positive, if the exponent was negative then you would move left) seven times, giving you 9,300,000 miles (for Earth). You then do the same with the next equation, giving you 140,000,000 miles (for Mars).

Finally, to find the official number of miles, you simply work the equation 140,000,000 - 9,300,000 .. giving you 130,700,000 miles.


If your teacher wants you to put it back into exponential form, then you first make the number into a decimal that is greater than one and less than ten.


1.30700000


Then, what you want to do is count all of the zeros as a single exponent, giving you 5, but we're not done yet. To get the correct answer, you have to also count the numbers until you reach the decimal. Remember to take out the zeros, because they're not really necessary anymore!


1.307×10^{8}

5 0
4 years ago
Other questions:
  • What is the average of the integers from 25 to 41?
    14·1 answer
  • How to solve |3x-6|&lt;30
    8·2 answers
  • What's is this I do find it out​
    9·1 answer
  • How many solutions does this equation have? x+4-6x=6-5x-2
    14·1 answer
  • Multiply. Find an exact answer and an estimated answer. 2 1/5•4 1/3. (Simplify your answer. Type an integer, proper fraction, or
    7·1 answer
  • Help please, Topic: Arrangments
    14·1 answer
  • Which is the best estimate of 162% of 79?
    5·2 answers
  • Data was collected from a simple random sample of 200 cell phone users age 18 or older in the United States. Each user was categ
    12·2 answers
  • Answer for -9k - 8k ???
    5·2 answers
  • Find each square root after supplying:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!