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
Ivan
3 years ago
6

Lian needs to solve the quadratic equation: x^2 - 4x - 2 = 0. Which statement about how Lian should solve this equation is true?

​
Mathematics
2 answers:
V125BC [204]3 years ago
7 0

Answer:

Step-by-step explanation:

Remark

This sounds like there should be choices. I will make a couple of suggestions.

Suggestions

1. You can't factor this by using the factors of 2 (like +/- 2 or +/- 1.  

2. You must use the quadratic equation.

3. You don't get rational numbers.

4. You do get real numbers.

5. To confirm the equation, you can graph it.

6. You could complete the square which is rather the long way of doing it.

Here is the graph solution

Graph

Ulleksa [173]3 years ago
5 0

Answer:

x = 4.45 or x = - 4.45

Step-by-step explanation:

Here are the steps:

Substitute the values,

4+\sqrt{-4^2-4(1*-2)} ÷ 2 × 1

x = 2 ± √6

x = 4.45 or x = - 4.45

<em>good luck, i hope this helps :)</em>

You might be interested in
The radius of a sphere is 3 inches. Which represents the volume of the sphere?
Mrac [35]

Answer:

b

Step-by-step explanation:

The volume (V) of a sphere is calculated as

V = \frac{4}{3}πr³ ( where r is the radius )

Here r = 3, thus

V = \frac{4}{3}π × 3³

   = \frac{4}{3}π × 27 = 4π × 9 = 36π in³ → b

3 0
3 years ago
Read 2 more answers
Can you please help me with an equation
kompoz [17]
What’s the equation?
8 0
3 years ago
Graph (1,1), (1,2), (1,3), (1,4)
jenyasd209 [6]

Answer:

There is not a way that I can show you how to graph it, so I will try and explain it.

Step-by-step explanation:

(1,1)

^  ^     y-axis

x-axis

You are just going right however many, and then up however many it says.

So if it's (1,1) you will go right one space, and then up one space.

Once you have all of your points on the graph, you put a line through them.

Hope this helps! :)

3 0
2 years ago
What is the value of u if 6u =15
tatiyna
6u = 15
  u = 15/6
  u = 2.5
5 0
3 years ago
Read 2 more answers
convert each of the following numbers to a fraction and write them in order from least to greatest on the line below 5-2 10-2 20
mina [271]

Answer:

33

Step-by-step explanation:I had this question before, hope this helps :)!

4 0
2 years ago
Other questions:
  • Combining like terms -3(5x+4)-(2x+2)-3x+6
    12·1 answer
  • The vertices of ΔGHI are G(-3,0), H(-5,-5), and I(1,-5). What are the coordinates of the image after being reflected over the y-
    11·1 answer
  • What are two ways to find 35% of 700
    9·1 answer
  • Helpnfjdjfjfjfjfjfjfjkfkff
    6·1 answer
  • What is the answer to -3 + (-12)=
    9·2 answers
  • Which expression are greater than 1/2? Choose all the apply
    7·1 answer
  • Ill give brainliest to CORRECT ANSWER!
    14·2 answers
  • 2. help me i will give you brainliest
    15·2 answers
  • How much is 17% out of 100%
    5·2 answers
  • What is the range of the function y= 2e7-1?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!