Question

What are the approximate solutions of 2x2 − 7x = 3 rounded to the nearest hundredth?

No real solutions

x ≈ −0.77 and x ≈ 7.77

x ≈ −0.39 and x ≈ 3.89

x ≈ −3.89 and x ≈ 0.39

Answer 1

Im confused by this problem. 2x2 would make people think you're multiplying 2 by 2. What does the equation really look like?

Answer 2

2x^2 - 7x = 3

Answer 3

Oh ok

Answer 4

factor first:
(2x-1)(x-3)

Answer 5

so either 2x-1=0 or x-3 = 0

Answer 6

so x= 1/2 or x = 3

Answer 7

that is not in the choices though

Answer 8

yeah... somethings wrong...

Answer 9

2x^2 - 7x = 3
2x^2 - 7x - 3 = 0
(2x-1)(x-3) ===> this line's wrong

Answer 10

so how do i solve it?

Answer 11

y = ax^2 + bx + c

y = 0 at x points of:

Answer 12

\[ \frac{ -b +/-\sqrt{(b ^{2}-4ac} }{ 2a }\]

Answer 13

i'm confused

Answer 14

so:
from your equation
a = 2
b = -7
c = -3
sub those numbers into the equation I gave you and you'll get answers for x

Answer 15

\[x = \frac{ 7 - \sqrt{73} }{ 4}\]

Answer 16

\[or x = \frac{ 7 + \sqrt{73} }{ 4}\]

Answer 17

so x = 3.886
and
x = -0.386

Answer 18

ok thanks for the help

Answer 19

all good, sorry for the stuff up earlier

Answer 20

thats fine