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
RideAnS [48]
3 years ago
13

What are the real zeros of f(x) = x^3 +2x^2-5x-6

Mathematics
1 answer:
netineya [11]3 years ago
8 0

First of all Horner
First we try with -3
1. 2. -5. -6.
-3. 3. 6
1. -1. -2. 0
To verify: -3^3+2*-3^2+15-6=0

Now we have this equation
(X+3)*(x^2 - x -2)=0

I dont know If you know sum and product but that is the easiest way so sum= 1 product = 2 so 2 and -1 are the answers.
You can do this too by this way : b^2-4ac= D
X= (-b(+or-)d^1/2)/2a

So all the zeros
2, -1 and -3
If you want more explanation, send me a comment x
You might be interested in
Hat value is needed to fill in the blank to make this trinomial a perfect square trinomial. 4x2 + __x + 81?
Doss [256]
36, because the square root of 4 is 2 and the square root of 81 is 9. You multiply those and then double it to get 36.
4 0
3 years ago
PLS I NEED YOUR HELP AND I REALLY NEED THIS DONE CAN YOU GUYS DO THIS FOR ME I'LL BRAINLIEST. use the quadratic formula to find
Elenna [48]

Answer:

my answer is (5±√10)/3

8 0
3 years ago
Read 2 more answers
37 x 51 = 1,500 + 350 + ____ + 7
Gelneren [198K]

Answer:

For it to be completed it will be 30

6 0
3 years ago
2х + Зу = 16.9<br> 5х = y + 7.4
Maurinko [17]

Answer:

(2.3, 4.1)

Step-by-step explanation:

I don't exactly know what you want answer wise

6 0
3 years ago
Solve<br> 13^x+2=5<br> having a bit of trouble
-Dominant- [34]
<em>Solve: </em>13^{x} + 2 = 5

Start by isolating the x-variable as much as you can:
13^{x} = 5 - 2 = 3
13^{x} = 3

Now, if we take the log with base 13 of both sides, then the left hand side will cancel out really easily. This is based on the concept of inverse operations. For example, when we take the square of a square root, we get our initial value. This is because the two operations are inverses of each other, and basically undoes each other.

Logarithms and exponentials are the inverse operations of each other. If we want to extrapolate the power of an exponential, we take the logarithmic function of it, and vice versa.

In this case, we are saying what power of '13' will produce us with 13ˣ, and the only answer will be x itself.

log_{13}(13^{x}) = log_{13}(3)
x = log_{13}(3)
3 0
3 years ago
Other questions:
  • How do you decrease 42kg by 3% (Thanks for the help!)
    12·1 answer
  • What is 7950000000 in scientific notation?
    12·1 answer
  • A bank offers a 2.5% annual interest rate for a savings account. Suzy puts $1,000 into an account to save for college. How much
    6·1 answer
  • PLEASE HELP!!!!! I will give extra points and mark the brainliest to whoever answers this correctly!
    6·1 answer
  • What numbers are rational and what numbers are Irrational
    6·1 answer
  • What is 4 1/4 * 4/34 =
    6·1 answer
  • 8•1 and 8<br>pls need help ASAP​
    15·1 answer
  • Guided Practice
    9·2 answers
  • A/5=b/7 if b#0 what is the value of a/b​
    14·1 answer
  • HELP SOMEONE ITS NOT 1 OR 3
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!