Question

use the quadratic formula to solve the equation
x^2 =7x - 6 = 0
I don't remember how to solve something like this. please help.

Answer 1

it's x^2 +7x-6=0?

Answer 2

yeah

Answer 3

no -7x sorry type

Answer 4

typo**

Answer 5

x^2-7x-6=0

a=1
b= -7
c= -6

Delta= b^2 -4ac
Delta= (-7)^2 -4*1*(-6) = 49 +24= 73

x1;x2= (-b +/- root from Delta)/2a

x1= (-b+ root from Delta)/2a= (-(-7) + root 73)/2*1= (7+ root 73)/2

x2=(-b - root from Delta)/2a= (-(-7) - root 73)/2*1= (7 - root 73)/2

Solution is S={ (7-root 73)/2 ; (7+root 73)/2}

Answer 6

what is root and delta. i have no idea what that is.... you made it more confusing..

Answer 7

\[\sqrt{x}\] -is root

Answer 8

oh

Answer 9

\[\Delta \] -is delta

Answer 10

ok. i had tagged you in another question i needed help with. but you never looked at that one.

Answer 11

i'm still getting used with this site, i'm just a day old :))) i didn't know where to look :))

Answer 12

the hammer at the upper left is notificatins.

Answer 13

Will award medal. i don't know how to solve this. What is the vertex form of the equation? y= -X^2 +12x -4

Answer 14

this is the question.

Answer 15

i've seen that,but i don't know how to see where you've mentioned me :))

Answer 16

i tagged you in it. there would be a notification for that.

Answer 17

yes,it is,but how can i see the question where i'm tagged in? :))

Answer 18

you click on it silly. and it takes you to the question.

Answer 19

aa :))))