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
Zarrin [17]
3 years ago
12

What does the middle term have to be in this trinomial to make it a perfect square? x^2+?+4

Mathematics
2 answers:
melomori [17]3 years ago
7 0

A perfect square is an expression in this form:

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

So, we have two perfect squares, and twice the product of the roots.

We have the two perfect squares: x^2 is the square of x, and 4 is the square of 2.

So, our perfect square can be completed in one of the two following ways:

x^2-4x+4 = (x-2)^2,\quad x^2+4x+4 = (x+2)^2

arlik [135]3 years ago
5 0

Answer: 4x

Step-by-step explanation:

Formula: a^2+2ab+b^2.

So in this case our a^2 is x^2. our b^2 is 4.

To find the middle term (2ab) we do 2*x*2 = 4x

You might be interested in
Prime factorization of 43
Volgvan

Answer:

Step-by-step explanation:

Prime factorization: 43 is prime. The exponent of prime number 43 is 1. Adding 1 to that exponent we get (1 + 1) = 2. Therefore 43 has exactly 2 factors.

8 0
3 years ago
Consider the function f(x) = 3x and the function g, which is shown below.
VLD [36.1K]

Answer:

<em>B. The graph of g is the graph of f shifted 2 units down</em>

Step-by-step explanation:

<u>Graph of Functions</u>

We have two functions:

f(x)=3^x

g(x)=3^x-2

Since g(x)=f(x)-2 it will be represented as an identical graph as that for f(x), but vertically displaced 2 units down. Let's check it by plugging some points

f(0)=3^0=1

g(0)=3^0-2=-1

f(1)=3^1=3

g(1)=3^1-2=1

f(3)=3^3=27

g(3)=3^3-2=25

We can notice the values of g(x) are always 2 units below f(x), thus the correct answer is

B. The graph of g is the graph of f shifted 2 units down

7 0
3 years ago
The size of a certain cell is 2.5 x 10^-9 m. Another cell is 1.5 x 10^3 times larger. How large is the larger cell in scientific
Sveta_85 [38]
The answer is d. I just took the quick check.
6 0
4 years ago
Read 2 more answers
What is a rational and irrational number?
KIM [24]

Answer:

In mathematics, a rational number is a number such as −3/7 that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Every integer is a rational number: for example, 5 = 5/1.

In mathematics, the irrational numbers are all the real numbers which are not rational numbers. That is, irrational numbers cannot be expressed as the ratio of two integers.

Step-by-step explanation:

hope it helps :)))

8 0
3 years ago
KLMN is a rectangle. Solve for y.<br><br> Please help :)
EastWind [94]

Answer:

31

Step-by-step explanation:

i have no idea if that is right

4 0
3 years ago
Other questions:
  • What value of x is in the solution set of 3(x-4)greater than or equal to 5x+2
    9·1 answer
  • What is equivalent to 32/40
    15·2 answers
  • Solve and show how you did: -2x + (12 - 9) = 2 + 9 + 2x
    14·1 answer
  • Jimmy accidentally wrote 1500 for an answer on his test, but the answer was supposed to be -1500. He got it wrong, but told his
    8·2 answers
  • Once a computer worm infects a personal computer via an infected e-mail message, it sends a copy of itself to 100 e-mail address
    8·1 answer
  • K &amp; Christian each have a garden of the same size and shape cake grows flowers one and six her of her garden Christian grows
    5·1 answer
  • Paige ran 3 miles on Monday, walked 8 miles Tuesday
    10·1 answer
  • A bank's loan officer rates applicants using their FICO credit score. The ratings are normally distributed with a mean of 711 an
    9·1 answer
  • NEED HELP ASAP!!!!
    7·2 answers
  • Help me solve this equation about completing tables and comparisons.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!