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
kodGreya [7K]
3 years ago
13

25 (a square) - 4 (b square) + 28bc - 49 (c square)

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
8 0

Answer:

(5a - [2b - 7c]) and (5a + [2b + 7c])

Step-by-step explanation:

Factor 25a^2 - 4b^2 + 28bc - 49c^2.

Note that - 4b^2 + 28bc - 49c^2 involves the variables b and c, whereas 25a^2 has only one variable.  Thus, try to rewrite - 4b^2 + 28bc - 49c^2 as the square of a binomial:

- 4b^2 + 28bc - 49c^2 = -(4b^2 - 28bc + 49c^2), or

                                        -(2b - 7c)^2.

Thus, the original  25a^2 - 4b^2 + 28bc - 49c^2  looks like:

                               [5a]^2 - [2b - 7c]^2

Recall that a^2 - b^2 is a special product, the product of (a + b) and (a - b).  Applying this pattern to the problem at hand, we conclude:

Thus,   [5a]^2 - [2b - 7c]^2 has the factors (5a - [2b - 7c]) and (5a + [2b + 7c])

You might be interested in
You randomly survey students in your school about the color of their eyes. The results are shown in the tables. For each gender,
Afina-wow [57]
I dont see a table dudde
8 0
3 years ago
Multiply. ​2 3/5 ⋅ 5/6​<br><br> help :,)
madreJ [45]

Answer:

23/6

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please i need some help on this question
Pachacha [2.7K]

Answer:

1) For 3 tickets, the cost is $12

2) For 5 tickets, the cost is $20

3) $28 can purchase 7 tickets

4) For 10 tickets, the cost is $40

Step-by-step explanation:

1) For 3 tickets

8 = 2

x = 3

(8 ÷ x) = (2 ÷ 3)

Cross multiply,

2x = 8 x 3

2x = 24

x = 24 ÷ 2

x = $12

Use the same principle for the other questions. Use X (or any other variable) to represent the missing value, I e. the value you are calculating.

I hope this helps.

7 0
2 years ago
Anyone know the answer to to this algebra question?
liraira [26]

Answer:

a=1

b= 1/16

c= 1/256

d= 1

e= 4/9

f= 16/81

Step-by-step explanation:

Plug in the values of X on the left side of the table into the function on the right side of the table. Remember that negative exponents mean the number is under a fraction. 4^-0 is like saying one over 4^0.

For the blue table, because the numbers are already in a fraction and in parentheses, you apply the exponent to each number individually.

7 0
3 years ago
What is the solution set for this linear-quadratic system of equations?
Lostsunrise [7]
Y - x - 3 = 0
y = x + 3

y = x^2 - x - 12
x + 3 = x^2 - x - 12
x^2 - x - 12 - x - 3 = 0
x^2 - 2x - 15 = 0
(x - 5)(x + 3) = 0

x - 5 = 0     y = x + 3
x = 5          y = 5 + 3
                  y = 8

x + 3 = 0     y = x + 3
x = -3          y = -3 + 3
                   y = 0

so ur solutions are : (5,8) and (-3,0)
3 0
3 years ago
Read 2 more answers
Other questions:
  • Find the exact value of each of the following. In each case, show your work and explain the steps you take to find the value.
    12·1 answer
  • a total of 210 people attended the opening night of a School Musical, students tickets cost $3 each while general admission tick
    8·2 answers
  • Divide 28 of soda into two groups so the ratio is 3 to 4​
    8·1 answer
  • A building manager installs sensors to see how often people turn of the lights when they leave a room. After a month the manager
    12·2 answers
  • PLEASE HELP ME!! THIS IS DUE IN LIKE 10 MINS!!! I DONT UNDERSTAND IT!!
    5·1 answer
  • The indicated function y1(x) is a solution of the given differential equation. Use reduction of order or formula below:
    8·1 answer
  • pls help me answer these questions you can do as much as you can!! if correct I'll make Brainliest!!​
    9·1 answer
  • Andre’s group was asked to write an expression equivalent to 5 p squared q + 7 p q squared minus 10. When Ms Berger checked thei
    11·2 answers
  • C is the circumcenter of APQR.<br> PC=3x+7, RC=5x-15, &amp; QC=51-X<br> x=[?]
    15·1 answer
  • Plsss I need help
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!