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
Lisa [10]
3 years ago
12

How to solve 2x^2 - 4x = 3

Mathematics
1 answer:
zhenek [66]3 years ago
6 0

Answer:

1 ± i(1/2)√2

Step-by-step explanation:

Write this quadratic in standard form:  subtract 3 from both sides.  This results in 2x^2 - 4x - 3 = 0.  Let's apply the quadratic formula.  The coefficients of the x terms are 2, -4 and -3, so the discriminant is (-4)^2 - 4(2)(-3), or 16 - 24 = -8.

Following the format of the quadratic formula, we get

     -(-4) ±i2√8       4 ±i2√2        

x = ----------------- = --------------- =  1 ± i(1/2)√2

               4                    4

You might be interested in
Which expression is equivalent to 9p+9p
mafiozo [28]

Answer:

18p? I don't know what other expressions could be equivalent. I just added 9p to 9p to get my answer.

8 0
2 years ago
Square root of50 is it rational true or false
morpeh [17]
Rational numbers end
irrational numbers do not
pi is an irrational number
√2 is an irrational number
so
√50=√2 times √25=√2 times 5
irrational times rational =irrational
√2=irrational

answer is false, it is rrational





3 0
3 years ago
How many triangles can be constructed with 3 angles, each measuring 63°?
earnstyle [38]

Answer:

0

a triangle's angles should add up to be 180 degrees. Three angles of 63's sum is 189

4 0
3 years ago
Read 2 more answers
Simplify 4+(-3)-2x(-6)
jonny [76]

Answer:

1 + 12

Step-by-step explanation:

Let's do this one step by step!

We are going to make sure that we pay attention to the part in the parenthesis first!

Let's multiply -2x with -6 first.

Equation:

4+(-3)-2x(-6)

We do not need to parenthesis around the -3 because a negative cancels out a positive. So, no matter what you would have to subtract.

4 - 3 + 12x

And we get a positive 12 because both numbers that were being multiplied were negative.

Now let's combine common terms.

1 + 12x

This is your answer! I hope this helped!

8 0
3 years ago
Hi pls help me solve this. Need it now. ​
kenny6666 [7]

Answer:

I Had this question moments ago lol

Step-by-step explanation:

The top one is 52 over 110 and the bottom one is 60 over 65!

3 0
2 years ago
Other questions:
  • The length of a rectangle is 7 centimeters greater than the width. If 4 centimeters are added to both the length and the width,
    7·1 answer
  • If L = 8 inches, W = 5 inches, and H = 4 inches, what is the volume of the rectangular prism?
    8·1 answer
  • How do you find x? Please help
    7·1 answer
  • Point B is between A and Con AC. If AB = 4x - 5,
    5·1 answer
  • A rectangle is 4 times as long as it is wide. The perimeter of a rectangle is 50 cm. What are the dimensions of the rectangle?
    14·2 answers
  • What is 1.5555 as a simplified fraction.
    5·2 answers
  • In a circle of any size, what ratio does
    15·2 answers
  • X/-3+33=30 solveeeeee
    5·1 answer
  • Let f(x) = 2x-1 solve f(x+1)
    13·1 answer
  • Some please give me the quadratic formula?​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!