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
Rufina [12.5K]
3 years ago
5

Factor completely 3X^2 -25​

Mathematics
1 answer:
Dominik [7]3 years ago
5 0

In order to factor a polynomial, you have to find its roots

x_1,\ x_2,\ldots,x_n

So that you can factor it as

p(x)=(x-x_1)(x-x_2)\cdots(x-x_n)

So, in this case, we're looking for the solutions of

3x^2-25=0 \iff 3x^2=25 \iff x^2 = \dfrac{25}{3} \iff x=\pm\sqrt{\dfrac{25}{3}}=\pm\dfrac{5}{\sqrt{3}}

So, the polynomial can be written as

3x^2-25 = \left(x-\dfrac{5}{\sqrt{3}}\right)\left(x+\dfrac{5}{\sqrt{3}}\right)

You might be interested in
Factor b^4 - 2b^2 - 63
Andrej [43]

Answer:

( b − 9 ) ( b + 7 )

Step-by-step explanation:

Find two number that multiplies - 63 and add - 2

9 & 7 are both the greatest common factor

4 0
2 years ago
Read 2 more answers
Ashley's cell phone costs $5 per month plus 10 cents per minute. Her friend's costs $3 per month plus 15 cents per minute. For w
lukranit [14]

Answer:40 min

Step-by-step explanation:

5+.10x=3+.15x

-.10. -.10

5= 3+.05x

-3. -3

2=.05x

Divide by .05

X=40

5 0
2 years ago
Find the slope of the line -2,-6 and -4,8
Karolina [17]

Answer:

dhkmbhuigago katangina mo

7 0
2 years ago
Read 2 more answers
Marking brianliest pls help
Contact [7]

Answer:

117.3

Step-by-step explanation:

7*4=117.29=117.3

6 0
2 years ago
Find the missing measure
Firdavs [7]

Answer:

25 degrees

Step-by-step explanation:

It's a 90 degree angle so if you subtract 90 from 65 you'll get 25 degrees.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Find the value of the greater root of x^2-6x+5=0
    6·1 answer
  • A sailboat depreciates at 15% of its original value each year. If the sailboat was $9500 at its time of purchase, what is the va
    9·2 answers
  • - 8x + 14 = -2(4x – 7)
    10·2 answers
  • According to​ researchers, the mean length of imprisonment for​ motor-vehicle-theft offenders in a nation is 14.5 months. One hu
    11·1 answer
  • Can someone answer this question please please help me I really need it if it’s correct I will mark you brainliest .
    15·2 answers
  • How to find the area for a Isoceles triangle
    13·2 answers
  • I need to know the pounds required. I started some of the steps but I feel like I messed up somewhere
    15·1 answer
  • Can anyone help me out? Find a and b
    12·1 answer
  • Select the line plot that represents the given ages of students in a youth choir.
    10·1 answer
  • Which of the following ratios are equivalent to 20% ? 5:15 , 1:5 , 2:5 , 3:12 , 4:20
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!