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
Cerrena [4.2K]
3 years ago
12

FACTOR the following quadratic expression: x^2-3x-18. Clearly show your steps OR explain your reasoning and CHECK your answer by

multiplying to get back to the starting expression. A correct answer without a CHECK and work/ explanation will NOT receive full credit! NOTE: Press and hold the SHIFT button and press 6 to make the "^" exponent symbol. Someone plz help its doe in 10 min
Mathematics
1 answer:
kakasveta [241]3 years ago
6 0

Answer:

The factors of x² - 3·x - 18, are;

(x - 6), (x + 3)

Step-by-step explanation:

The given quadratic expression is presented as follows;

x² - 3·x - 18

To factorize the given expression, we look for two numbers, which are the constant terms in the factors, such that the sum of the numbers is -3, while the product of the numbers is -18

By examination, we have the numbers -6, and 3, which gives;

-6 + 3 = -3

-6 × 3 = -18

Therefore, we can write;

x² - 3·x - 18 = (x - 6) × (x + 3)

Which gives;

(x - 6) × (x + 3) = x² + 3·x - 6·x - 18 = x² - 3·x - 18

Therefore, the factors of the expression, x² - 3·x - 18, are (x - 6) and (x + 3)

You might be interested in
Divide. −4 2/5÷(−5)<br> −22/25<br><br> −8/25<br><br> 8/25<br><br> 22/25
Alika [10]

−4 2/5÷(−5)

−22/25

The answer is 8/25

5 0
3 years ago
Read 2 more answers
Find the volume of this cone.
Andrews [41]

Answer:

V = 180 ft^3

Step-by-step explanation:

The volume of a cone is found by

V = 1/3 pi r^2 h  where r is the radius and h is the height

The diameter is 12 so the radius is 1/2 the diameter or 1/2(12) = 6

The height is 5 and we are using 3 for pi

V = 1/3 (3) *6^2 *5

V = 180 ft^3

4 0
3 years ago
One step equations<br> 6r=42
zvonat [6]

R=7

I hope that help you! :)

3 0
3 years ago
Read 2 more answers
What is the area of this composite figure, in square centimeters?<br> 176<br> 209<br> 242<br> 264
e-lub [12.9K]

Answer:

209

Step-by-step explanation:

We can divide the figure into 2 parts to make this easier.

11x16=176 so the square is 176 square cm.

(11x6)/2 = 66/2 = 33 so the triangle is 33 square cm.

176+33 = 209 sq cm.

3 0
3 years ago
Read 2 more answers
Find the sum of x and y.<br><br> A.14<br><br> B.30<br><br> C.50<br><br> D.104
Oxana [17]
The answer is d i got it right message me 
5 0
3 years ago
Other questions:
  • Bill's Roast Beef sells 5 times as many sandwiches as Pete's Deli. The difference between their sales is 360 sandwiches. How Man
    13·1 answer
  • If g( n ) = 3 n - 2, then what is the value of g(10)?
    7·1 answer
  • 5 less than the product of a number n and 3
    11·2 answers
  • Which shapes are congruent to shape I
    5·2 answers
  • Jonas builds a snow fort. He tells his friends it is 0.8 meters tall inside, but he rounded the height to the nearest tenth.
    12·1 answer
  • Someone pls help me ill give out brainliest pls don’t answer if you don’t know
    12·1 answer
  • What is the answer??? Only if you know please i will report you no games
    14·1 answer
  • Convert 4.5 kg into g​
    11·2 answers
  • Find −1/6(2.4) . Write your answer as a fraction in simplest form.
    12·1 answer
  • A city has a population of 220,000 people. Suppose that each year the population grows by 6.25%. What will the population be aft
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!