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
Anvisha [2.4K]
3 years ago
6

*Brainliest* I need help with 4 problems like this...KHAN ACADEMY.

Mathematics
1 answer:
Sedaia [141]3 years ago
5 0

9514 1404 393

Answer:

  1. (x +1)² = 4
  2. (D)  x = -1 ±2

Step-by-step explanation:

Start by getting the x-terms on one side of the equal sign. We can do that by subtracting x from both sides.

  3 = x² +2x

Now, add the square of half the x-coefficient.

  3 +1 = x² +2x +1

  (x +1)² = 4 . . . . . . . . write as a square in the desired form

__

To solve, take the square root, and add the opposite of the left-side constant.

  x +1 = ±2

  x = -1 ±2 . . . . . . matches choice (D)

You might be interested in
Mona stopped at a gas station where the price per gallon was $2.80. She spent $14 to fill up her car. What equation would repres
Illusion [34]

Answer:

14/2.8

Step-by-step explanation:

6 0
2 years ago
Look at the function below.
weqwewe [10]
The answer is B because the x describes the domain and it can also be the input value
4 0
3 years ago
Need help with this answer
ioda

Answer:

(2,2) is your answer :)

Step-by-step explanation:

3 0
3 years ago
A trampoline has a rectangular jumping surface that is 10.3 feet long and 9.3 feet wide . What is the area of the jumping surfac
Andrei [34K]
Area is equals length times (*) breath
L*b
10.3*9.3
=95.79l
4 0
3 years ago
Find the better definition of y-intercept.
ExtremeBDS [4]

Answer:

4

Step-by-step explanation:

that is the intercept of the line to y

6 0
3 years ago
Read 2 more answers
Other questions:
  • -1 and 1/4th divided by - 1/2
    12·1 answer
  • in the last election, 1,200 people in the precinct voted. the ratio of men to omen was 3 to 5. how many of the voters were women
    13·1 answer
  • Value of 6n-2 when n=3
    6·2 answers
  • What is 0.4% written as a decimal? <br><br> A. 0.04<br> B. 0.4<br> C. 2.5<br> D. 0.004
    7·2 answers
  • A square pyrimads is shown. What is the surface area?
    8·1 answer
  • Help....
    13·2 answers
  • Find the exact angular velocity in radians per hour wind W= 4.1 rpm
    14·1 answer
  • Please help me fr im struggling
    13·1 answer
  • State if the three numbers can be the lengths of the sides of a triangle 7, 19, 9​
    5·1 answer
  • I dont get this please help
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!