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
lions [1.4K]
3 years ago
5

4(2x+7) +3 (2x+7) but (2x+7) is equal to 2

Mathematics
1 answer:
vodomira [7]3 years ago
6 0
Use the distributive property to get 8x+28+6x+21 then combine 8x and 6x and also combine 28 and 21 to get 14x+49, do u need to go further or?
You might be interested in
Express each product in the simplest form.
ololo11 [35]
4 is probably the answer. Hope this helps. :)
5 0
3 years ago
Read 2 more answers
A: What are the solutions to the quadratic equation x2+9=0? B: What is the factored form of the quadratic expression x2+9? Selec
Paraphin [41]

Answer:

A. The solutions are x=3i,\:x=-3i.

B. The factored form of the quadratic expression x^2+9=(x-3i)(x+3i)

Step-by-step explanation:

A. To find the solutions to the quadratic equation x^2+9=0 you must:

\mathrm{Subtract\:}9\mathrm{\:from\:both\:sides}\\\\x^2+9-9=0-9\\\\\mathrm{Simplify}\\\\x^2=-9\\\\\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\\\\x=\sqrt{-9},\:x=-\sqrt{-9}

x=\sqrt{-9} = \sqrt{-1}\sqrt{9}=\sqrt{9}i=3i\\\\x=-\sqrt{-9}=-\sqrt{-1}\sqrt{9}=-\sqrt{9}i=-3i

The solutions are:

x=3i,\:x=-3i

B. Two expressions are equivalent to each other if they represent the same value no matter which values we choose for the variables.

To factor x^2+9:

First, multiply the constant in the polynomial by i^2 where i^2 is equal to -1.

x^2+9i^2

Since both terms are perfect squares, factor using the difference of squares formula

a^2-i^2=(a+i)(a-i)

x^2+9=x^2+9i^2=\left(-3i+x\right)\left(3i+x\right)

5 0
3 years ago
Factor y2 + 10z - 10y - yz
stira [4]
Group and factor
group y's with y's and z's with z's
(y²-10y)+(10z-yz)
factor
y(y-10)+z(10-y)
force undistribute -1
-y(10-y)+z(10-y)
factor
(10-y)(-y+z)
(z-y)(10-y) or
(y-z)(y-10)
6 0
3 years ago
Read 2 more answers
Which is a correct way to find f(3) when f(x) = 2x27​
dalvyx [7]
The answer to = 2x27 is f(x)
5 0
3 years ago
A. Convert 39/7 to a mixed number
saul85 [17]
The answer to this question is A). 39 b). 56
3 0
3 years ago
Other questions:
  • The volume (V) of a sphere varies directly with the cube of its radius (r). If k is the constant of proportionally, which is the
    14·1 answer
  • What is 83,640,000 in scientific notation
    8·2 answers
  • A fisherman can row upstream at 2 mph and downstream at 8 mph. He started rowing upstream until he got tired and then rowed down
    13·1 answer
  • Compare. use <,>,or = (2^7)^2 2^10*2^2
    10·1 answer
  • Find 1,2,4 m angles
    13·2 answers
  • If it is 250 miles from New York to Boston and 120 miles from New York to Hartford, what percentage of the distance from New Yor
    6·2 answers
  • PLEASE HELP
    8·1 answer
  • Kevin brought 15 chicken wings for 31.50 how much would it cost for 7 wings.
    12·1 answer
  • 4 - (y - 3) = 3(y + 1) - 4(1 - y)
    8·1 answer
  • Equipment has been sorted into Baseballs and bats. The number of baseballs is four less than three times the number of bats. The
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!