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
Ratling [72]
3 years ago
15

Choose one of the factors of x^3 + 343.

Mathematics
1 answer:
Debora [2.8K]3 years ago
3 0

First, note that 343=7^3. Then use the formula for the sum of perfect cubes:

a^3+b^3=(a+b)(a^2-ab+b^2).

Therefore,

x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).

The quadratic trinomial x^2-7x+49 couldn't be factored anymore, so the expression x^3 + 343 has two factors x+7 and x^2-7x+49.

Answer: correct choice is A.

You might be interested in
Kevin bought 2 pairs of jeans that were originally $40 per pair but were each marked down by $15 and 3 t-shirts for $12 each. He
ryzh [129]

Answer:

Therefore, Kevin spent $56.

Step-by-step explanation:

We know that the Kevin bought 2 pairs of jeans that were originally $40 per pair but were each marked down by $15 and 3 t-shirts for $12 each. He also used a coupon for $10 off his entire purchase.  

Therefore, we have 2 pairs of jeans for $15 and 3 t-shirts for $12 each and a coupon for $10 off his entire purchase.

We calculate the total amount he spent.

2\cdot 15+3\cdot 12-10=30+36-10=56

Therefore, Kevin spent $56.

4 0
3 years ago
What is 25% of 100????
adell [148]

Answer:

25

Step-by-step explanation:100 percent of 100 is 100 so 25 percent is 25

4 0
3 years ago
Read 2 more answers
It costs $6.45 to buy 5 songs on I-tunes. How much does it cost to buy 20 songs?
babunello [35]

Answer:$25.80

Step-by-step explanation:

6.45/5 = 1.29

1.29 x 20 =25.80

5 0
2 years ago
Consider the following function.
shtirl [24]
Help ASAP only right answers only no spam don’t answer if you don’t know

















3 0
3 years ago
9x - 4y? +72x–24y— 36–0
earnstyle [38]
Not is posible because no exist a igualty
3 0
3 years ago
Other questions:
  • michelle drove 325 miles in 5 hours.if she traveled at a steady speed ,how far did she drive per hour
    8·2 answers
  • Whats the reciprocal of 5\9 ?
    11·2 answers
  • Use factoring to write an expression that is equivalent to 25b^16-64c^2
    11·1 answer
  • 6x +2 =2(x+4)-2 helpp meee
    13·2 answers
  • Find the greatest common factor of 48^a 38a
    9·1 answer
  • Find the sum and express it in simplest form. (3t2 + 6t + 1) + (-9t2 - 5t)
    11·1 answer
  • A bag contains 9 marbles: 4 are green, 2 are red, and 3 are blue. Laura chooses a marble at random, and without putting it back,
    14·1 answer
  • What is the solution to the quadratic inequality?
    11·1 answer
  • What happens to the mean of the data set shown below if the number 3 is added to the data set? A. The mean increases by 2. B. Th
    14·1 answer
  • What is the value of 25​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!