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
tekilochka [14]
2 years ago
6

Factor the expression 4x^2 - 12x - 7

Mathematics
1 answer:
alexdok [17]2 years ago
7 0

Answer:

(2x+1) (2x-7)

Step-by-step explanation:

Multiply the coefficient of the first term by the constant   4 • -7 = -28

Find two factors of  -28  whose sum equals the coefficient of the middle term, which is   -12

(  -28    +    1    =    -27  

     -14    +    2    =    -12  )

Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -14  and  2  

                    4x2 - 14x + 2x - 7

Add up the first 2 terms, pulling out like factors :

                   2x • (2x-7)

             Add up the last 2 terms, pulling out common factors :

                    1 • (2x-7)

Add up the four terms :

                   (2x+1)  •  (2x-7)

You might be interested in
What number is the same as 5 tens + 12 ones
Lera25 [3.4K]
The answer to your problem is 62.
8 0
3 years ago
Read 2 more answers
Cot^2x-csc^2x=-1 for all values of x true or falsse
Leno4ka [110]
Our basis for this equality is the pythagorean theorems of trigonometry. There are three equations for the pythagorean theorems. These are:

sin²x + cos²x =1
1 + tan²x = sec² x
1 + cot² x = csc² x

These are all derived from circle geometry on the cartesian plane. Now, the useful trigonometric property to be used is the third one. Rearranging this, we come up with

cot²x - csc²x = -1

This coincided with the given equation. Therefore, this is true. This is because it is already established from the pythagorean theorems.
4 0
3 years ago
Read 2 more answers
A street that is 164m long is covered in snow. City workers are using a snowplow to clear the street. The snowplow has tires tha
telo118 [61]
The number of times the tires will have to spin is 24.9 times. How I got this was by finding the circumference, the equation in this case where pi is 3.14 is 3.14(2.1). That equals 6.594, then you divide 164 by 6.594 to get 24.87109 blah blah and you round that up to 24.9.
7 0
3 years ago
A company borrows $75,000 for 8 years at a simple interest rate of 7.5%. Find the interest paid on the loan and the total amount
yan [13]
The interest is $58,760.84
The total is $133,760.84
4 0
2 years ago
PLEASE HELPPP!!
DanielleElmas [232]

Answer:

-3 + 5 = 2

-3 + -2 = 1

-2 + -1 = -3

5 - -1 = 6

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • The correct formula to determine the volume of a cylinder is
    9·1 answer
  • Write an expression with with (-1) as its base that will produce a positive product, and explain why your answer
    10·1 answer
  • A theater group is having a carwash fundraiser. The group can only spend $34 on soap, which is enough to wash 40 cars. Each car
    9·1 answer
  • Nearest whole number to 459.517
    7·2 answers
  • Simplify the expression (6^4)^2.
    13·2 answers
  • Find the 50th term of 2, 5, 8, 11 its +3 every time.
    7·1 answer
  • What is the ratio of 8 to 8
    11·2 answers
  • PLZ HELP WILL GIVE BRAINLIEST
    10·2 answers
  • 1.-25 is an example of a whole numbers. True O O False​
    14·2 answers
  • Jill and Kyle get paid per project. Jill is paid a project fee of $45 plus $10 per hour. Kyle is paid a project fee of $20 plus
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!