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
lesya692 [45]
2 years ago
14

Choose the correct simplification of the expression −4x2(6x − 5x2 − 5). 20x4 24x3 20x2 −9x4 2x3 − 9x2 20x4 − 24x3 20x2 −20x4 24x

3 − 20x2.
Mathematics
2 answers:
dedylja [7]2 years ago
7 0

Answer: 20x4−24x3+20x2

Step-by-step explanation:

when simplifying you first distribute the -4x^2. This will result in -24x^3, 20x^4, and 20x^2

Archy [21]2 years ago
6 0

Answer:

20 x^4 - 24 x^3 + 20 x^2 is the only correct answer however not the best simplification.

Step-by-step explanation:

Simplify the following:

-4 x^2 (-5 x^2 + 6 x - 5)

Hint:  Factor a minus sign out of -5 x^2 + 6 x - 5.

Factor -1 out of -5 x^2 + 6 x - 5:

-4 x^2×(-(5 x^2 - 6 x + 5))

Hint:  Multiply -4 and -1 together.

-4 (-1) = 4:

Answer:  4 x^2 (5 x^2 - 6 x + 5)

You might be interested in
Solving these quadratics for x using complete the square 3x^2-4x-1=0. Show your work.
UkoKoshka [18]
Answer: x = (sqrt(7) + 2)/3 and
x = ( – sqrt(7) + 2)/3

Explanation:

3x^2 - 4x - 1 = 0

Divide both sides by 3:

3x^2/3 - 4/3x - 1/3 = 0/3
x^2 - 4/3x - 1/3 = 0
x^2 - 4/3x = 1/3
x^2 - 4/3x + (2/3)^2 = 1/3 + (2/3)^2
(x - 2/3)^2 = 1/3 + 4/9
(x - 2/3)^2 = 7/9

Sqrt both sides:

x - 2/3 = sqrt (7/9)
x - 2/3 = |sqrt(7)/3|

Set x -2/3 = sqrt(7)/3

=> x = (sqrt(7) + 2)/3

Set x - 2/3 = - sqrt(7)/3

=> x = ( - sqrt(7) + 2)/3
6 0
3 years ago
What operation does not require you to line up the decimals in order to solve a problem
Alex73 [517]

Decimal points must be aligned with performing addition or subtraction.

The arithmetic operation that does <em>not</em> require decimal points be aligned is multiplication.

_____

For multiplication, you only need to know the number of digits to the right of the decimal point(s).

For long division, it is usually convenient to convert the divisor to an integer and adjust the decimal point of the dividend accordingly. Alternatively, it is necessary to know the number of digits in each number that are to the left of the decimal point.

3 0
3 years ago
What is 30x pulse 80x
nataly862011 [7]
It would be 110x because they are like units, so they can be added together. Really, you are just doing 80 plus 30, and then adding an x on the end.
7 0
3 years ago
Read 2 more answers
Simplify 2x + x. only correct answer
levacccp [35]
Add 2x and x to get 3x

Answer:3x
3 0
3 years ago
What is the y-axis in math?​
Oduvanchick [21]

Answer:

y-axis. noun

Step-by-step explanation:

a reference axis, usually vertical, of a graph or two- or three-dimensional Cartesian coordinate system along which the y- coordinate is measured.

8 0
2 years ago
Read 2 more answers
Other questions:
  • 19. The heights, in inches, of players on a basketball team are:
    11·2 answers
  • Find the measure of angle x in the figure below<br>67 61<br>у<br>X<br>67​
    14·2 answers
  • 65 POINTS PLEASE HELP
    12·2 answers
  • Is 0.4 m less than 5cm?
    11·2 answers
  • 2.5% of what number is 14?
    8·1 answer
  • WILL GIVE BRAINLIEST! use the given diagram to determine the segment lengths
    11·1 answer
  • PLEASE HELP MY TEST IS DUE SOON!<br> look at photo all of the questions
    6·1 answer
  • Tell the shape, center, and spread of this data set.
    10·1 answer
  • PLZZZZZZZZZZZZZZZZZZ HELP WILL GIVE BRAINLIEST
    13·2 answers
  • Can someone help me? i dont understand 3
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!