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
Travka [436]
2 years ago
7

X^(2)+x-20 splitting the middle term

Mathematics
1 answer:
lubasha [3.4K]2 years ago
5 0
Are you trying to factorise this?

Here is a way you may not have been taught....
(x + a)(x + b) = x^2 + (a + b)x + ab

So you need to find two factors of -20 that add up to +1
-4 x 5 = -20 and -4 + 5 = 1. Perfect

x^2 + x - 20 = (x - 4)(x + 5)
You might be interested in
If dan has $3.75 and he spends 1/3 of it how much does he have left
olga_2 [115]
3.75 divided by 3= 1.25
3.75-1.25= 2.50
3 0
3 years ago
Read 2 more answers
Write the trinomial as a square of a binomial<br> x^2+2xy+y^2
vitfil [10]

Answer:

\large\boxed{x^2+2xy+y^2=(x+y)^2}

Step-by-step explanation:

(x+y)^2=(x+y)(x+y)\\\\\text{Use FOIL}\ (a+b)(c+d)=ac+ad+bc+bd\\\\=(x)(x)+(x)(y)+(y)(x)+(y)(y)=x^2+xy+xy+y^2=x^2+2xy+y^2

3 0
3 years ago
Read 2 more answers
How to solve -40=30m-16?
Gennadij [26K]
What I would do for this problem, is move all the terms that don't contain m to the right side, and then solve.
m = 4/5.
7 0
3 years ago
Read 2 more answers
What would x equal in this equation
KATRIN_1 [288]

Answer:

x = 15

Step-by-step explanation:

6/4 = 1.5

1.5*10 = 15

Check your work:

15/10 = 6/4 = 1.5

x = 15 is right

8 0
3 years ago
Help me with this please asap​
Sloan [31]

Answer:

See below

Step-by-step explanation:

32.  w + 5 = -20

       w = -20 - 5

       w = - 25

33.  x - 17 = -32

       x = -32 + 17

       x =  - 15

34.  t + 7.2 = 1.65

       t = 1.65 - 7.2

       t = - 5.55

35.  -0.4 = g - 4.9

       g = - 0.4 + 4.9

       g = 4.5

36.  y - 2/5 = 1 3/5

       y = 1  3/5  +   2/5

       y =  1   5/5  or   2

37.  -5 1/6 = 2 1/3 + p

       p =  - 5 1/6  -  2  1/3  convert 1/3 to x/6 for a common denominator

1/3 converts to 2/6

        p =  -5  1/6  -  2  2/6

        p =  - 7   3/6    or   - 7  1/2

38.  You were given that

Simone =  $65.35 + Dan

Simone =  Carly - 37.50

Carly = 127.75

So Simone = 127.75 - 37.50  =  90.25

Simone = 65.35 + Dan   or Dan = Simone - 65.35

Dan = 90.25 - 65.35 = 24.90

7 0
2 years ago
Other questions:
  • 56 1/4% in simplest form. don't understand how to do it
    14·2 answers
  • floodwaters are used to prevent damage from floods. A town built a floodwall 4 4/8 feet tall. Another town built a floodwall 7 1
    5·1 answer
  • -3(-5+4)cubed+(-10+9)squared(-2)​
    15·1 answer
  • English
    5·1 answer
  • 1. 9 students volunteer for a committee. How many different 6-person committees can be chosen?
    13·1 answer
  • What’s the answer? Because am having a hard time with this math problem.
    15·1 answer
  • -5x+4y=3<br><br> x=2y-15<br><br><br> Solve for y and x
    13·1 answer
  • Jonah has a recipe that uses 1 1/2 cups of brown sugar and 2 1/3 cups of flour to make 24 muffins. He has a total of 7 cups of f
    11·1 answer
  • George has baked 48 chocolate chip cookies and 64 snickerdoodle cookies
    6·1 answer
  • HELP HELP HELP HELP HELP
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!