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
blagie [28]
3 years ago
14

Write a polynomial of least degree with rational coefficients, a leading coefficient of 1, and zeros at 3 and sqr root 7. Expand

your answer and write it in standard form
Mathematics
1 answer:
Tresset [83]3 years ago
6 0

Answer:

(x-3)(x^2-7) = x^3 -3x^2 -7x + 21

just change the sign of the root and put x in front of it, then multiply the factors all together

(x-3)(x-sqr7)(x+sqr7)    roots come in conjugate pairs to eliminate irrational coefficients

(x-sqr7)(x+sqr7) = x^2-7.  similar to (a-b)(a+b) = a^2-b^2

Step-by-step explanation:

You might be interested in
E is between D and F. Find DF. PLEASE HELP, PICTURE PROVIDED— DUE TMMR
german

Answer:

24

Step by-step explanation:

6x=3x-1+13

common like terms (-1+13)

6x=3x+12

subtract 3x on both sides

3x=12

divide 3x on both sides

x=4

insert 4 into equation 6*4=24

3(4)-1+13=24

6 0
3 years ago
the measure of one of the angles of a triangle is 35 degrees, the sum of the measures of the other two angles is 145 degrees and
kozerog [31]
80 and 65 are the measurements
7 0
3 years ago
Select the correct name for the following line.
gavmur [86]
Line AB is a line, for the line continues through the points given and goes on 'forever'

hope this helps
3 0
3 years ago
Read 2 more answers
Anna is saving to buy some souvenirs on a family vacation. She has already saved $125, and she saves another $2 from her
FinnZ [79.3K]

We can assume that the y-intercept for this equation is 125, because that would be how much Anna already has saved before she begins saving money from her allowance. Then, we know that Anna adds $2 to her savings each day from the problem, so we know that the slope will be positive 2 then.

Equation:

y = 2x + 125

Graph:

Attached below

Hope this helps!! :)

6 0
3 years ago
Read 2 more answers
Simplify the expression 417000 x 0.0002
Amanda [17]
Please see picture above.

5 0
3 years ago
Other questions:
  • PLZ HELP ME !!!! <br> Which expressions below equal a rational number ? Choose ALL that apply !
    9·2 answers
  • A factory's worker productivity is normally distributed. one worker produces an average of 77 units per day with a standard devi
    12·1 answer
  • What is the solution set of the quadratic inequality f(x) greater than or equal to 0
    10·1 answer
  • If m RQ = 118°,<br> then T = _____ degrees<br> S = ______ degrees
    13·2 answers
  • Ted is comparing the temperatures of three days in January . The temperatures on Monday and Tuesday were opposites . The tempera
    9·1 answer
  • Solve for x. plz help
    12·2 answers
  • In right triangle JFK sin(52)= cos(5x-2). What is the measure of the smallest angle in the triangle?
    13·1 answer
  • Find the equation of the linear function represented by the table below in slope-
    7·1 answer
  • Gumballs cost $0.50 each and jawbreakers cost $0.30 each bob has 3.00 to spend on candy
    11·1 answer
  • In the polynomial below.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!