Question

Determine the number of real solutions of -2x^2 + 5x - 3 = 0.
A. 0
B. 1 (double root)
C. 2

Answer 1

@jim_thompson5910

Answer 2

what did you get

Answer 3

you can either factor or you can use the quadratic formula

Answer 4

I got B

Answer 5

oh wait, they don't want the solutions themselves

Answer 6

they want the number of solutions

Answer 7

so you use

D = b^2 - 4ac

Answer 8

yep and i got B, wouldnt that be right?

Answer 9

tell me what you get when you evaluate D = b^2 - 4ac

Answer 10

plug in a = -2, b = 5, c = -3

Answer 11

2

Answer 12

D = b^2 - 4ac

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

D = 1

So you were close

Answer 13

since this discriminant is greater than 0, you get 2 real solutions

Answer 14

so that's why the answer is C

Answer 15

ohhh gotchya!