Question

Which of the following is a solution of 3x2 = 7x − 3?

Answer 1

following - where are ?

Answer 2

negative 7 plus or minus the square root of 13 divided by 6
7 plus or minus the square root of 85 divided by 6
negative 7 plus or minus the square root of 85 divided by 6
7 plus or minus the square root of 13 divided by 6

Answer 3

do you know how you can solving quadratic equation ?

Answer 4

whats the equation?

Answer 5

3x^2 = 7x -3

what you ve wrote above

Answer 6

take the 7x-3 on the left side - this is the first step

Answer 7

u equal it to zero?

Answer 8

ok after are u to factor?

Answer 9

after take the 7x-3 on the left side yes will make it equal zero

Answer 10

do you can writing me here please how you ve get it ?

Answer 11

and after this you need to calculi the discriminant - do you know the formula of discriminant ?

Answer 12

b^2-4ac

Answer 13

yes right but what is your quadratic firstly ?

Answer 14

oh ok I'm getting it let me solve it

Answer 15

3x^2 = 7x -3 subtract from both sides 7x and add to the both sides 3

Answer 16

3x^2-7x+3, then i just put it into quad form? a=3,b=-7,c=3??

Answer 17

exactly - very nice job - but 3x^2 -7x +3 make it equal zero - ok. ?

Answer 18

yes I got it now, so its the third one, thank you so much!

Answer 19

negative 7 plus or minus the square root of 85 divided by 6

do you think on this ?

Answer 20

3x^2-7x+3, then i just put it into quad form? a=3,b=-7,c=3??

so in this case just you need calculi the discriminant using these a,b and c values and this above wrote formula of discriminant

Answer 21

never mind that answer was wrong, not sure where i made my mistake i just put it onto quad form and solved

Answer 22

yes i saw it just for tis i wan ,like solve it here and i can checking your work - ok ?

Answer 23

Ashley - how many is the discriminant - this is the next step

Answer 24

3x^2-7x+3, then i just put it into quad form? a=3,b=-7,c=3??

you wrote this above

Answer 25

3x^2-7x+3
quad form:
x=-(-7)+/- sqrt of -7^2 -4(3)(3)
so its 7+/-sqrt of 49-36
7+/-sqrt of 13

Answer 26

so its the last one but idk where they got the 6 from

Answer 27

Ashley - sorry but i ve wrote above that you need make it equal zero for you get an equation -

3x^2 -7x +3 = 0

D = b^2 -4ac = ?

Answer 28

-7^2-4(3)(3)

Answer 29

49-36

Answer 30

yes for discriminant is right so how many will be ?

Answer 31

13

Answer 32

correct now you know that the discriminant is equal 13

and you need to know formula of roots x_1,2 = ?

Answer 33

idk the formula

Answer 34

you know it sure bc. you ve wrote it above but you forgot something from there - check it please

Answer 35

there you ve wrote

x = -(-7) +/- ...

Answer 36

so bc. there are +/- this mean that is formula of two roots

x_1,2 = ...

Answer 37

oh ok i wasn't sure what you were asking, so
49-sqrt13
49+sqrt13

Answer 38

from where is this 49 there ?

Answer 39

oh I'm sorry i was squaring it.. I'm all over the place sorry..
then 7-sqrt13
7+sqrt13

Answer 40

Ashley - just easy . please relax one moment - you know these all

Answer 41

ok. looke please there i said that this what you ve wrote there not is the complete answer bc you forgot ,missed from there the last part of this formula

Answer 42

please you dont remember

x_1,2 = (-b +/- sqrt(D)) .?... what is there again ?

Answer 43

no please delete it

Answer 44

so you know that there is

x_1,2 = (-b +/- sqrt(D)) .?.. and from the end of this formula you ve forgot something

Answer 45

omg
/2a

Answer 46

than i said that you need divide it by something

Answer 47

yes sure - do you see that you know these ALL

Answer 48

haha wow i can't believe this is what i have been forgetting this entire time.. and that equals 6.. wow seriously thank you so much, i appreciate it a lot!

Answer 49

Ashley i said to you that you know these ALL just you need relax one moment and hope these helped to you

was my pleasure and anytime just tag me than you like help you - so than i m here online

good luck

bye bye

Answer 50

or do you have again questions ?

Answer 51

no haha thats it for now if i have any other questions ill be sure to tag you! :)

Answer 52

ok will be here and help you - hope i will can - bye bye