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
eimsori [14]
3 years ago
11

Find the zeros of polynomial function. f(x)=x^2-x-90

Mathematics
1 answer:
Fofino [41]3 years ago
7 0

First step is to factor. With a polynomial function in the form ax² + bx + c = f(x), we have to find what factors of term C have a sum of term B.

So with this, we need factors of -90 add up to become -1. Your factors are - 10 and 9.

f(x) = x² + 9x - 10x - 90

Now we group together and pull out GCFs.

f(x) = (x² + 9x) + (10x - 90)

f(x) = x(x² + 9) - 10(x + 9)

f(x) = (x - 10)(x + 9)

Now, set each factor equal to zero.

x - 10 = 0, x + 9 = 0

For the first equation you are going to add 10 to both sides to get x by itself. Subtract 9 from both sides in the second equation for the same reason.

x = 10, x = -9

Your zeros are at x = -9, 10 or at the ordered pairs (-9, 0) and (10, 0).

You might be interested in
Evaluate the variable expression x + y for the given values of x and y . X=43.37 ; Y=18.24
cupoosta [38]

Answer:

61.61

Step-by-step explanation:

In the expression now that we know the value of x and y, we can replace it with its values. So it would look like this.... 43.37 + 18.24. This equals 61.61.

Hope this helps!

4 0
3 years ago
What is a distance formula?
ludmilkaskok [199]
That is a distance formula I was gonna type it but I didn’t have the symbols so use the picture attached.

6 0
3 years ago
3.9 times 10 to the 20 power
Jobisdone [24]
3.9*10 = 39 then that to the 20 power is 6.626621133E31


Hope this helps!
5 0
3 years ago
Read 2 more answers
Andy runs 436.8 meters in 62.08 seconds.if Andy runs at a consistent speed how fast does he run in one second? Give your answer
Zina [86]
Andy runs 7 meters per second.

436.8/62.08 = x/1
436.8/62.08=7.04
7.04/1 =7.0/1

Hope that help!:)
6 0
3 years ago
Dean and Tara are photographers. They take pictures of seniors for high school yearbooks. They charge a standard fee for taking
swat32
Yes that is correct. And?
3 0
3 years ago
Other questions:
  • Why is the annual interest rate more important to a borrower who carries a balance than to a borrower who pays off the
    12·2 answers
  • John can reach 60 centimeters above the top of his head. If John is 2 meters tall, how high can he reach?
    5·1 answer
  • What is 4.3 convert into a fraction
    10·2 answers
  • I picked up 15 shells and my brother picked up 3 more shells than I did. How many shells sis my brother and I picked altogether?
    14·2 answers
  • PLEASE HURRY
    14·2 answers
  • Evaluate 6|5 - c| + 2c when c = 6
    5·2 answers
  • What is 2.34 billion in scientific notation
    13·1 answer
  • Simplify the expression. 3.7z to the power of 2+7.2+9z-1.2-2z+z to the power of 2.
    10·1 answer
  • PLS HELP ASAP PLS GIVE A GOOD EXPLANATION
    10·2 answers
  • Hi Can you help me with this question.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!