Question

how to solve x^2+kx-19

Answer 1

it's not an equation, it can't be solve... maybe a "=0" is missing ?

Answer 2

im suposee to find the value of k

Answer 3

yeah but you should have an "= something"

Answer 4

since c=sqrt(k/2) id start with that :)

Answer 5

i assume it wants you to solve for k such that it is a complete square?

Answer 6

c=(k/2)^2 that is

Answer 7

had a synapse crossed lol

Answer 8

i don't understand... what is c here ?

Answer 9

ax^2 +bx + c is the usual generic format for a quad

Answer 10

a complete square is then the case where c = (b/2)^2

Answer 11

yeah, but c = 19... ?

Answer 12

yep

Answer 13

so you decide it's a complete square, and then you resolve the thing ?

Answer 14

thats my assumption; i could be wrong since the information in the problem is open to interpretation :)

Answer 15

okay, i understand know. i absolutely didn't know that thing of "complete square". must not being teached by french teachers.

Answer 16

.... well, you cant blame them to much .. they are french :)

Answer 17

hey, i'm french too :p