Question

What are the solutions of 2x2 - 6x = -8?

Answer 1

c'mon

Answer 2

I'm awful i know i know

Answer 3

divide by 2 because otherwise it will be more annoying, get
\[x^2+3x+4=0\] then the damned formula again

Answer 4

\[x^2-3x+4=0\] is more like it

Answer 5

not the "damned formula" )):

Answer 6

yeah you gotta learn how to find \(b^2-4ac\) without lunching
it is something any adult can do

Answer 7

\[a=1,b=-3,c=4\] let me know what you get for
\[\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]

Answer 8

hint
the number inside the radical (the discriminant as we say in the math biz) is negative, so your solutions are complex, i.e. they will have an \(i\) in them

Answer 9

well i have 3 +/- sort -7/2

Answer 10

im not sure how to get i or what to do about all of that... @satellite73

Answer 11

k that is good

Answer 12

in fact it is completely right we are just going to make it look different
\[\sqrt{-7}=\sqrt{7\times (-1)}=\sqrt7\sqrt{-1}=\sqrt7 i\]

Answer 13

lol

Answer 14

it's always the same question.

Answer 15

note that you do all those steps in your head
i just wrote them out to show what i was thinking not what you need to write

Answer 16

i know, but ya know.. girls gotta get help haha @RaphaelFilgueiras

Answer 17

final answer
\[\frac{3\pm\sqrt7 i}{2}\]

Answer 18

note that the \(i\) is OUTSIDE the radical
if you write
\[\large \sqrt{7i}\] your teacher will think you are a moron

Answer 19

my teacher is a moron herself so i don't think it will be a problem (: but ill be sure its outside of the radical haha @satellite73

Answer 20

no doubt
who takes algebra in august?