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
olganol [36]
3 years ago
14

Factorise f²-f-20 step by step ​

Mathematics
2 answers:
dlinn [17]3 years ago
8 0

Answer:

(f+4)(f−5)

 

Step-by-step explanation:

The middle number is -1 and the last number is -20.

Factoring means we want something like

(f+_)(f+_)

We need two numbers that...

Add together to get -1

Multiply together to get -20

4+-5 = -1

4*-5 = -20

Fill in the blanks in

(f+_)(f+_)

with 4 and -5 to get...

(f+4)(f-5)

Naily [24]3 years ago
4 0

<em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em>

<em>Hey</em><em>!</em><em>!</em>

<em>Sol</em><em>ution</em><em>,</em>

<em>f^</em><em>2</em><em>-</em><em>f</em><em>-</em><em>2</em><em>0</em>

<em>=</em><em> </em><em>f^</em><em>2</em><em>-</em><em>(</em><em>5</em><em>-</em><em>4</em><em>)</em><em>f-20</em>

<em>=</em><em> </em><em>f^</em><em>2</em><em>-</em><em>5</em><em>f</em><em>+</em><em>4</em><em>f</em><em>-</em><em>2</em><em>0</em>

<em>=</em><em> </em><em>f</em><em>(</em><em>f-5</em><em>)</em><em>+</em><em>4</em><em>(</em><em>f-5</em><em>)</em>

<em>=</em><em>(</em><em>f</em><em>-</em><em>5</em><em>)</em><em>(</em><em>f</em><em>+</em><em>4</em><em>)</em>

<em>So</em><em> </em><em>the</em><em> </em><em>ans</em><em>wer</em><em> </em><em>is</em><em> </em><em>(</em><em>f</em><em>-</em><em>5</em><em>)</em><em>(</em><em>f</em><em>+</em><em>4</em><em>)</em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> on</em><em> your</em><em> assignment</em>

<em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em><em>_</em>

You might be interested in
(x1/2y)^4 help me please I need an A
vodka [1.7K]

Answer:

this is simplify 1/16 x4 y4

4 0
3 years ago
A T-shirt launcher can launch 105 shirts in 20 minutes. What is the rate in shirts per hour?
Margarita [4]

The T-shirt launcher can launch 315 shirts per hour.

4 0
3 years ago
Read 2 more answers
Help math ASAP ASAP math
LenKa [72]

Answer:

y-7=-2/1 (x-1)

Step-by-step explanation:

Hope this helps!

8 0
2 years ago
What is the smallest number that has a remainder of 1, 2, and 3 when divided by 2, 3, and 4, respectively? Are there more number
Kitty [74]

Answer:

11 is the answer.

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Simplify this expression.<br> 6x + 3 – 4x + 2y + 7
SVEN [57.7K]

Answer:

2x + 10 + 2y

Step-by-step explanation:

6x + 3 – 4x + 2y + 7

(6x - 4x) = 2x

2x + 3 +2y + 7

(3 + 7) = 10

Answer: 2x + 10 + 2y

4 0
3 years ago
Other questions:
  • Ach equation:<br> - 5(– 2x - 4) + 5x - 4 =- 29
    13·1 answer
  • Samuel is in charge of ordering lunch for participants in a company seminar. He needs to order 24 lunch specials that each cost
    14·1 answer
  • Which of the following represents the general equation for the geometric sequence?
    14·1 answer
  • Question 1 of 20
    5·1 answer
  • Before an election 23% said that would vote for A 9% said they would vote for B 20% said they would not vote these all votes as
    6·1 answer
  • What is the inequality to 4-3x≥7
    9·1 answer
  • Is the following relation a function?<br><br> x y<br> −1 −2<br> 2 3<br> 3 1<br> 6 −2
    14·2 answers
  • A flower bed has the shape of a rectangle 15 feet long and 12 feet wide. What is its area in square yards? Be sure to include th
    8·1 answer
  • Solve for y when x = 5.<br> y = 3x + 4
    5·1 answer
  • Which function is graphed below?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!