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
Alenkinab [10]
3 years ago
12

. Factorize a² +3ab - 5ab - 15b²

Mathematics
1 answer:
kipiarov [429]3 years ago
4 0

Answer:

a² +3ab - 5ab - 15b² = (a+3b) (a-5b)

Step-by-step explanation:

We need to factorize a² +3ab - 5ab - 15b². Firstly we need to rearrange the expression such that,

a^2-5ab+3ab-15b^2=(a^2-5ab)+(3ab-15b^2)

Now taking a common from the first two terms and 3b from last two terms, then :

(a^2-5ab)+(3ab-15b^2)=a(a-5b)+3b(a-5b)

In the above expression, a factor (a-5b) is in both the terms. It would mean that,

a(a-5b)+3b(a-5b)=(a+3b)(a-5b)

So, the factors of a² +3ab - 5ab - 15b² are (a+3b) (a-5b).

You might be interested in
Kala drove 260 miles using 12 gallons of gas. at this rate, how many gallons of gas would she need to drive 286 miles
dybincka [34]
Kala will use 13.2 gallons of gas to drive a distance of 286 miles.
3 0
3 years ago
Factor these expressions into an equivalent form.
Marrrta [24]
(c+8)(c-8)

3(2y+5)(2y-5)

There are no like terms so it's still ab^2-b
7 0
3 years ago
Read 2 more answers
*PLEASE ANSWER TY* What is the area of minor sector DFE?
FinnZ [79.3K]

Answer:

x ≈ 34.88 square cm

Step-by-step explanation:

Solve by proportional formula:

Area of a sector/area of circle* = sector central arc measure/360

*area of a circle = πr²

x/(53.29π) = 75/360

x/53.29π = 0.2083

x = 11.1020833π

x = 34.8782233

x ≈ 34.88 square cm

8 0
3 years ago
What’s the inequality?
Hitman42 [59]

Answer:

x: numbers of hot chocolate selling

y: numbers of apple cide selling

1x + 2y ≥ 240

2y ≥ 240 - x

y ≥ 120 - 0.5*x


7 0
3 years ago
the graph of the function f(x)= -(x-6)(x+2) is shown below which statement about the function is true
ololo11 [35]
We can’t answer this question without more info. It’s clearly a multiple choice question, so you need to provide the answers.
5 0
3 years ago
Other questions:
  • HELP±! FAST<br><br>What is the scale factor?
    15·1 answer
  • The Federal Pell Grant Program gives grants to low-income undergraduate students. According to the National Postsecondary Studen
    7·1 answer
  • A line segment has an endpoint at (3,2) and a midpoint is (6,-2) what are the coordinates for the other endpoint
    14·1 answer
  • If a triangle has a height of 7 centimeters and a base of 4 centimeters,what is the area
    14·1 answer
  • A large university accepts 70​% of the students who apply. Of the students the university​ accepts, 45​% actually enroll. If 30
    14·1 answer
  • Sarah earns $525 more than Andrew each month. They spend $1250 a month and save the rest. Sarah does not have any savings at fir
    9·1 answer
  • WILL MAKER BRAINLIEST!!! What is the area of the trapezoid? 49 in.2 56 in.2 67 in.2 74 in. the trapezoid has a height of 7 the s
    13·2 answers
  • COMPUTERS The byte is the fundamental unit of computer processing.
    14·1 answer
  • (BRAINLIEST) What is the solution to this system of equations?
    10·2 answers
  • On a coordinate plane, a line goes through (negative 4, 0) and (4, negative 4). a point is at (2, 3). what is the equation of th
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!