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
Natalka [10]
3 years ago
5

Please expand it (c-7d)2

Mathematics
1 answer:
asambeis [7]3 years ago
8 0

Answer:

c² - 14cd + 49d²

Step-by-step explanation:

Given

(c - 7d)²

= (c - 7d)(c - 7d)

Each term in the second factor is multiplied by each term in the first factor, that is

c(c - 7d) - 7d(c - 7d) ← distribute both parenthesis

= c² - 7cd - 7cd + 49d² ← collect like terms

= c² - 14cd + 49d²

You might be interested in
The function ƒ(x) = (x − 1)^2 + 5 is not one-to-one. Find a portion of the domain where the function is one-to-one and find an i
melisa1 [442]

Answer:

f(x)=(x-1)^2+5 with domain x>1 and range y>5 has inverse g(x)=sqrt(x-5)+1 with domain x>5 and range y>1.

Step-by-step explanation:

The function is a parabola when graphed. It is in vertex form f(x)=a(x-h)^2+k where (h,k) is vertex and a tells us if it's reflected or not or if it's stretched. The thing we need to notice is the vertex because if we cut the graph with a vertical line here the curve will be one to one. So the vertex is (1,5). Let's restrict the domain so x >1.

* if x>1, then x-1>0.

* Also since the parabola opens up, then y>5.

So let's solve y=(x-1)^2+5 for x.

Subtract 5 on both sides:

y-5=(x-1)^2

Take square root of both sides:

Plus/minus sqrt(y-5)=x-1

We want x-1>0:

Sqrt(y-5)=x-1

Add 1 on both sides:

Sqrt(y-5)+1=x

Swap x and y:

Sqrt(x-5)+1=y

x>5

y>1

3 0
3 years ago
The table can be used to determine the solution to the system of equations, 2y − x = 8, and y − 2x = −5.
Arte-miy333 [17]
Your answer is (6,7). 
5 0
3 years ago
Read 2 more answers
ten more than twice a number is 36. what is the number? write an algebraic expression then solve for the number
aniked [119]
10 more than (+) twice a number (2x) is (=) 36

10 + 2x = 36   Subtract 10 from both sides
        2x = 26   Divide both sides by 2
          x = 13
7 0
3 years ago
All my points + Brainliest, pls help.
Sever21 [200]

Answer: 2x - 1 > 0 ( x = 1)

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
QUESTION 9 OF 11
ivanzaharov [21]

Answer:

10

Step-by-step explanation:

sadasdasdasd

6 0
2 years ago
Other questions:
  • Write a division expression that is equivalent to 8/10 x (-3/4)?
    12·2 answers
  • A bookstore sells used books for $8 each. Let n represent the number of books. The cost for n books is 8 xn or 8n.
    14·1 answer
  • Usually when rotating 90 degrees is it clockwise or counterclockwise?
    10·1 answer
  • John bought a documentry series that is 52/8 hours long. If John already warched 1/6 of the total length of the documentary, wha
    15·1 answer
  • What 2 numbers multiply to -4 and add to -8
    6·2 answers
  • What is the length of the radius, /?<br> O 8 units<br> O 10 units<br> O 12 units<br> O 16 units
    9·1 answer
  • Solve for the value of M
    6·1 answer
  • 5 inches is what fraction of a foot
    13·1 answer
  • FREE BRAINLIST 2
    5·2 answers
  • Only questions 5 and 6 pls.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!