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
ryzh [129]
3 years ago
8

Which of the following expressions are perfect-square trinomials? Check all of the boxes that apply.

Mathematics
2 answers:
Kamila [148]3 years ago
8 0

Perfect squares follow this pattern:

(a\pm b)^2 = a^2\pm 2ab+b^2

So, two terms must be perfect squares of two certain roots. If so, the remaining term must be twice their product. Let's analyse the trinomials one by one:

1) x^2 is the square of x. -64 is not a perfect square. So, the trinomial is not a perfect square.

2) 4x^2 is the square of 2x. 9 is the square of 3. The remaining term, 12x, is indeed twice their product. So, we have

4x^2 +12x +9 = (2x+3)^2

3) x^2 is the square of x. 100 is the square of 10. The remaining term, 20x, is indeed twice their product. So, we have

x^2 +20x +10 = (x+10)^2

4) x^2 is the square of x. 16 is the square of 4. The remaining term, 4x, is not twice their product (it's only the product of 4 and x, so it should be doubled). So, this trinomial is not a perfect square.

steposvetlana [31]3 years ago
6 0

The answer is B and C

You might be interested in
What do you subtract from -3 td get positive 4?*
kogti [31]

Answer:

7

Step-by-step explanation:

3 0
3 years ago
PLZ ANSWER CORRECTLY 1 2⁄6 ÷ 4 1⁄3
JulijaS [17]

Answer:

0.30715935334

Step-by-step explanation:

8/6 ÷ 13/3

1.33÷ 4.33

0.30715935334

5 0
3 years ago
Read 2 more answers
How do I get blood off my shoes
s344n2d4d5 [400]

find the best angle to wipe the blood and calculate how many times you need to wipe the blood off.

4 0
3 years ago
If $500 is invested at 8% annual interest, how much will be in the account after 3 years if it's compounded quarterly?
Alchen [17]

Answer:

FV= $634.12

Step-by-step explanation:

Giving the following formula:

Initial investment (PV)= $500

Number of periods (n)= 3*4= 12 quarters

Interest rate (i)= 0.08/4= 0.02

<u>To calculate the future value, we need to use the following formula:</u>

<u></u>

FV= PV* (1 + i)^n

FV= 500*(1.02^12)

FV= $634.12

8 0
2 years ago
Answer please<br>Mathematics​
Vilka [71]
<h3>Answers:</h3>
  1. b) 573
  2. b) 0
  3. b) 3308
  4. a) 0
  5. a) 20

<h3>Hope it helps..</h3>

ray4918 here to help..

8 0
2 years ago
Read 2 more answers
Other questions:
  • Solve for x -
    8·2 answers
  • at a bake sale brownies were sold for $0.75 each and cookies were sold for $0.50 each there were 10 more cookies sold than brown
    6·1 answer
  • Solve for x.<br><br> −2x+3=15<br> Enter your answer in the box.<br><br> ​ x =
    12·2 answers
  • A supermarket display consists of boxes of cereal. The bottom row has 23 boxes. Each row has three fewer boxes than the row belo
    10·2 answers
  • How many triangles are shown, including any overlapping triangles?
    5·2 answers
  • 3 (2d-1) 2d= 4(d-2) + 5
    15·1 answer
  • Who is farther? a a Briel and Daniela are siblings. One day, Briel decided to go on a mountain climbing but Daniela went to the
    13·2 answers
  • Alybia was making 115 cookies for a Valentine’s Day party. They were each either red or purple. Forty percent of the cookies wer
    9·1 answer
  • PLEASE HELP GIVING BRAINLIEST
    6·1 answer
  • An employee receives a 4% raise once
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!