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
Zielflug [23.3K]
3 years ago
12

Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?

Mathematics
1 answer:
denis23 [38]3 years ago
4 0

36 is must be added to the expression x² + 12x to make it

perfect-square trinomial

Step-by-step explanation:

The perfect-square trinomial x² + 2ax + a² = (x + a)², then

1. The first term in the trinomial is square the 1st term in the bracket

2. The middle term in the trinomial is the product of 1st , 2nd

    terms of the bracket and 2

3. The 3rd term in the trinomial is square the 2nd term in the bracket

∵ The expression is x² + 12x

∵ We must add the 3rd term which make it perfect-square trinomial

- Divide 12x by 2 to find the product of the 1st term and 2nd term

  in the bracket

∵ 12x ÷ 2 = 6x

∴ The 1st term is x and the 2nd term is 6 of the bracket

∵ The 3rd term in the trinomial is square the 2nd term in the bracket

∴ The 3rd term in the trinomial is 6² = 36

∴ x² + 12x + 36 = (x + 6)²

36 is must be added to the expression x² + 12x to make it

perfect-square trinomial

Learn more:

You can learn more about perfect-square trinomial in brainly.com/question/7932185

#LearnwithBrainly

You might be interested in
Amanda's car gets 27 miles per gallon. If her tank holds 22 1/2 gallons how many gmiles can she drive on one tank of gas
lianna [129]
27 * 22.5 = 607.5 (or 607 1/2) miles
6 0
3 years ago
At a local health club, a researcher samples 75 people whose primary exercise is cardiovascular and 75 people whose primary exer
ivolga24 [154]

Answer:

A

Step-by-step explanation:

Basically, this is an observational study because the researcher does not apply any treatment.

It's not an experiment because there is no experimentation involved. :)

It's not double-blind because in that case the researcher would have to apply something to two kinds of groups. one aware one the other not. not the case.

It's not D because  The observations are comparing two kinds of subjects and they are not looking for a cause and effect.

8 0
3 years ago
Read 2 more answers
PLEASE help due today Geometry
irina1246 [14]

\\ \sf\Rrightarrow \dfrac{15}{20}=\dfrac{21}{28}

\\ \sf\Rrightarrow \dfrac{1}{4}=\dfrac{1}{4}

Hence they are similar

#2

  • <A=<H
  • And ratio of sides are same

Hence both triangles are similar by SAS property

#3

\\ \sf\Rrightarrow ∆KDH\sim ∆ABD

8 0
2 years ago
Which two numbers add up to 24 and multiply to -240?
posledela

Answer:

tôi không hiểu bạn nói gì

Step-by-step explanat ion :

5 0
3 years ago
Find the sum. 3 6 9 ... 294
MArishka [77]
S=((294+3)*(294/3))/2=14553
4 0
3 years ago
Other questions:
  • What is the answer to this question 65➗13=
    12·2 answers
  • five more than one-fourth of a number is two-thirds of that number. find the number. a. 15 b. 12 c. 13 d. 14
    10·1 answer
  • How to do this step by step
    8·2 answers
  • calculate the effective yearly rate if an investment offers a nominal interest rate of 9.5% compounded quarterly​
    7·1 answer
  • In a school, the number of boys is 9 more than thrice the
    7·2 answers
  • PLEASE HELP Frank's dog weighs 4.25 times more than his
    11·2 answers
  • A leaky pool loses 2 and one-fourth inches of water each day. Jermaine and Mildred are asked to determine the change in the amou
    12·2 answers
  • Please Help! Solve for X
    5·2 answers
  • Best answer = brainliest
    8·1 answer
  • each square on a grid represents 1 unit on each side.Calculate the slide of Graph E.What situation could the graph represent
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!