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
Vitek1552 [10]
4 years ago
14

What is the complete factorization of x^2+4x-45?​

Mathematics
2 answers:
erma4kov [3.2K]4 years ago
5 0

Answer:(x-5)(x+9)

Step-by-step explanation:

You want two numbers that can give you -45 in multiplication and two numbers that can add to 4 and that is -5 and 9.

Otrada [13]4 years ago
4 0

Answer:  (x - 5)(x + 9)

If you have to solve, x=5 or x= -9

Step-by-step explanation: You need two numbers that multiply to be 45.

(could be 3 × 15 or 5 × 9) . The difference between the two factors needs to be 4, the coefficient of the middle term.

9 - 5 =4, so use those.  -45 has a negative sign, so one of the factors must be + and the other -  Since the 4 has the + sign, the larger factor has to be + so the difference will be positive.

So (x -5)(x + 9) are your factors. You can FOIL to be sure

x × x += x² . x × 9 = 9x .  -5 ×  x = -5x . -5 × 9 = -45 .

Combine the x terms: 9x -5x = +4x  

You might be interested in
Calculate the area of a circle with a diameter of 8 feet
sattari [20]

Answer: 50.27

Step-by-step explanation:

Area = pi r^2

= pi x 16

4 0
3 years ago
Read 2 more answers
What is the value of sin2a + cos2a + sec2a-tan2a <br> Please
Artemon [7]

Answer:

2

Step-by-step explanation:

sin²a + cos²a + sec²a - tan²a

sin²a + cos²a = 1

1 + tan²a = sec²a

So, sec²a - tan²a = 1

sin²a + cos²a + sec²a - tan²a

= 1 + 1 = 2

5 0
3 years ago
What is the area of the image​
Studentka2010 [4]

The area of your figure equals to about 67

7 0
3 years ago
Please help!! Maths question I don't understand!
djverab [1.8K]

Answer:

see explanation

Step-by-step explanation:

The statements tells us that w is inversely proportional to v and the equation relating them is

v = \frac{k}{w} ← k is the constant of proportion

To find k use the condition v = 9, w = 5, that is

9 = \frac{k}{5} ( multiply both sides by 5 )

45 = k

v = \frac{45}{w} ← equation of proportion

When w = 4 , then

v = \frac{45}{4} = 11.25

4 0
3 years ago
Seven times the difference of 13 and a number
olga nikolaevna [1]

Answer:

The equation would be 7 x 13 + x

7 0
3 years ago
Other questions:
  • A botanist is using two types of plants for an experiment. She writes inequalities to model the constraints on the number of eac
    9·2 answers
  • I need help please.....
    8·1 answer
  • At a family reunion three cousins were comparing their ages. Jennifer is 17 years younger than Rene and Rene is 10 years older t
    7·1 answer
  • Whats the answer to this question
    6·1 answer
  • The total output from a production system in one day is 900 units and the total labor necessary to produce the 900 units is 900
    5·1 answer
  • Multiply.<br> (5x + 4)(5x+4)
    8·2 answers
  • Tonya wraps 2 presents in 3 minutes. At this rate, how many presents with Tonya wrap in 15 minutes?
    5·2 answers
  • 6th grade math<br><br> help on numbers 4 5 6 plz help
    10·2 answers
  • Suppose the linear regression line y = 2.009x - 37.131 predicts a pizza a
    11·1 answer
  • Which expression is equivalent to (8x − 4) + (5 − 4x)?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!