Question

Determine the number of real solutions of -2x² + 5x - 3 = 0.
Answers
a.2
b.1
c.0

Answer 1

Fine the discriminant
\[b^2-4ac\]
If <0, then 2 imaginary
If >0, then 2 real
If =0, then 1 real

Answer 2

is it A,b,or c,?

Answer 3

Plug into the expression above
What does a=?
b=?
c=?

Answer 4

Then evaluate the expression

Answer 5

a,b,c. are the answers

Answer 6

I know I'm telling you how to get the answer

Answer 7

your equation is in this form
\[ax^2+bx+c=0\]
So looking at this equation what is a,b, and c?

Answer 8

forget about your choices now

Answer 9

We are trying to figure out what a, b, and c are in the equation you have

Answer 10

.3. ok what do i do?

Answer 11

Trying to get you to tell me what a, b, and c are in your equation?
Your equation is in this form:
\[ax^2+bx+c=0\]
This is your equation
\[-2x^2+5x-3=0\]

Answer 12

What is a?

Answer 13

2

Answer 14

no

Answer 15

try again

Answer 16

-2

Answer 17

yes! :)
now what is b?

Answer 18

b=5 c=-3

Answer 19

Ok great now plug those into the discriminant that I mentioned

Answer 20

\[b^2-4ac \]

Answer 21

5^2-4(-2)(-3)=1

Answer 22

OMG great! :)
Now I'm going to copy and paste what I said about the discriminant:
If <0, then 2 imaginary
If >0, then 2 real
If =0, then 1 real

Answer 23

Which one is it?
Is 1 <0?
Is 1>0?
Is 1=0?

Answer 24

1=0?

Answer 25

No you know 1 is bigger than 0

Answer 26

Which on says 1 is bigger than 0?

Answer 27

oo my bad 1>0

Answer 28

Great! :)
So The conclusion is ?

Answer 29

If >0, then 2 real

Answer 30

so that answer is A?

Answer 31

Yes :)

Answer 32

Good job!

Answer 33

thank you.

Answer 34

I will give you a medal for working so hard to figure it out :)

Answer 35

thanks