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
nataly862011 [7]
3 years ago
10

ASAP!! PLEASE Will mark the brainliest answer If a + b = 7 and ab = 12, then find the value of a2- ab+ b2 and a3+b3

Mathematics
1 answer:
aleksandrvk [35]3 years ago
5 0

Answer:

13 and 91

Step-by-step explanation:

(a + b)² = a² + 2ab + b² , substitute values

7² = a² + 2(12) + b²

49 = a² + 24 + b² ( subtract 24 from both sides )

25 = a² + b²

Then

a² - ab + b²

= a² + b² - ab , substitute values

= 25 - 12

= 13

-------------------------------------------

a³ + b³ = (a + b)(a² - ab + b²) ← substitute values

a³ + b³ = 7 × 13 = 91

You might be interested in
Suppose that the function f(x)=6x+4 represents the number of cars that drive by in x minutes. how many cars will pass by in 10 m
Sidana [21]
64 car would drive by
4 0
3 years ago
Read 2 more answers
Peter puts the 3 month supply of dog food on his credit card. If each of his 3 children says that they will pay an equal amount
abruzzese [7]

Answer:

divide the cost of the dog food by three and thats ur answer

Step-by-step explanation:

7 0
4 years ago
On Tuesday Emily bought four posters,
hram777 [196]

Answer: 16 posters

Step-by-step explanation:

Monday - Had owned 16 posters

Tuesday - Bought 4 posters, adding up to 20

Wednesday - Half of the posters were destroyed, half of 20 is 10

Thursday - 10 posters remained.

8 0
3 years ago
Read 2 more answers
Use a polynomial Identity to expand this squared binomial<br> (x + 6)2
krek1111 [17]

Answer: x2 + 12x

Step-by-step explanation:

7 0
3 years ago
If you know anything about combining equations, specifically subtracting, can you please help me :)
Rufina [12.5K]

Answer:

5x - 2y = -2

Step-by-step explanation:

When subtracting one equation from the other, we are essentially just subtracting the left side of the second equation from the left side of the first equation and doing the same thing with the two right sides.

Here, we are subtracting (-7x + 3y) from (-2x + y):

(-2x + y) - (-7x + 3y)

Let's get rid of these parentheses. Remember that when we have a subtraction sign before a parentheses, we need to distribute a -1 to each term within those parentheses:

(-2x + y) - (-7x + 3y) = -2x + y + 7x - 3y = -2x + 7x + y - 3y = 5x - 2y

Now on the right side, we're subtracting 2 from 0:

0 - 2 = -2

Put it all together:

5x - 2y = -2

Hope this helps!

7 0
3 years ago
Read 2 more answers
Other questions:
  • Find the image of c under the translation described by each vector
    9·1 answer
  • line 1 passes through points (4, -4) and (8,-3) while line 2 passes through points (1,-6) and (-1,2). determine whether the line
    6·1 answer
  • A sample of n = 25 n=25 diners at a local restaurant had a mean lunch bill of $16 with a standard deviation of σ = $ 4 σ=$4 . We
    9·1 answer
  • Becky leaves school to go home. She walks 6 blocks North and then 8
    8·1 answer
  • Find the surface area, please
    11·2 answers
  • What is the center and radius of the circle with the given equation? <img src="https://tex.z-dn.net/?f=x%5E2%2By%5E2%2B2x%2B8y%3
    12·1 answer
  • Are there any supplementary, vertical, or complimentary angles? If so wich ones
    15·1 answer
  • How long does it take for the account to be worth about $750?
    7·1 answer
  • How do I solve an inequality with fractions? <br> Example:
    5·2 answers
  • Xavier determined 36% of students bring their lunch to school.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!