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
OverLord2011 [107]
3 years ago
9

Sergey is solving 5x2 + 20x – 7 = 0. Which steps could he use to solve the quadratic equation by completing the square? Check al

l that apply. 5(x2 + 4x + 4) = –7 + 20 x + 2 = 5(x2 + 4x) = 7 5(x2 + 4x + 4) = 7 + 20 5(x2 + 4x) = –7 x + 2 =
Mathematics
2 answers:
Readme [11.4K]3 years ago
8 0

Answer:

5(x^2+4x)=7

Option 2 and 3 is correct.

Step-by-step explanation:

Case (I).

Given equation is

5x^2+20x-7=0

Firstly, we will add of 7 in both sides

5x^2+20x-7+7=7

Now, same variable of opposite sign is cancelled

5x^2+20x=7

Now, taking 5 common from left side

5(x^2+4x)=7

Case (II).

Given equation

5x^2+20x-7=0

Firstly, we will add of 7 in both sides

5x^2+20x=7

Now, we will add of 20 in both sides

5x^2+20x+20=7+20

Now, taking common of 5 from left side

5(x^2+4x+4)=7+20

So, The next step on solving completing square is 5(x^2+4x)=7 and 5(x^2+4x+4)=7+20

Dahasolnce [82]3 years ago
4 0

Answer:

2,3,4 are the answers on edge

Step-by-step explanation:

You might be interested in
What is the area of this parallelogram?
Lady_Fox [76]

Answer:

17.15

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Write an equation of the line passing through the point (9,3) that is perpendicular to the line y = + 11.
sveta [45]

Answer:

9=3+11

Step-by-step explanation:

5 0
3 years ago
Manuel bought 17 pounds of flour for $7. How many dollars did he spend per pound?
harkovskaia [24]
.41 dollars a pound
.25 dollars an hour
4 0
3 years ago
Find the center!! PLEASE HELP
BartSMP [9]
D i think it’s right
7 0
3 years ago
Is 3(x+2)-10=5x-6 one souliton
gulaghasi [49]

Answer:

one solution it is x=1

Step-by-step explanation:

i can type in the steps if you want

3 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose that Jean studied for the Graduate Management Admission Test (GMAT) using a well-known preparation class and was thrille
    6·1 answer
  • What is the best estimate for the product of 289 and 7
    9·1 answer
  • Consider the relationship below.
    7·1 answer
  • How to write a quadratic function in vertex form and identify the vertex?
    12·1 answer
  • What are two consecutive integers that have a sum of -67
    6·1 answer
  • (8x² + 3x + 9) - (6x² + x + 6).
    14·1 answer
  • Andre and han are moving boxes. Andre can move 4 boxes every half hour. Han can move 5 boxes every half hour. How long will it t
    14·1 answer
  • What is the distance between Point A and Point B ?
    14·1 answer
  • A rectangular bedroom is 2 ft longer than it is wide. Its area is 99 ft^2. What is the width of the room?
    8·1 answer
  • Between which x-values and y-values does the cluster lie
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!