Question

I have started this problem myself but as I was working I got stuck and can't move on.

Use the quadratic formula to solve the equation
x^2 - 7x - 6 = 0

Answer 1

already teach u

Answer 2

What ?

Answer 3

\[x^2-7x-6\]

Answer 4

Yes but this is a different kind of problem. Do you want to see what I have done so far ?

Answer 5

\[a=1\rightarrow b=-7 \rightarrow c=-6\]

Answer 6

Yes I already plugged them into the formula

Answer 7

Show us your working then :)

Answer 8

wht hv u got?

Answer 9

Better use latex :)

Answer 10

Okay, so the quadratic formula is \[x = -b \pm \sqrt{b ^{2} - 4ac} / 2a\]

Answer 11

yap

Answer 12

The 2a is divided by the whole thing.

Answer 13

I plugged a, b, and c in and got \[x = -(-7) \pm \sqrt{-7^{2} - 4(1)(-6)} / 2(1)\]

Answer 14

Yes I know that the 2a is multiplied by the whole thing

Answer 15

ur r8

Answer 16

Okay :)

But it is divided not multiplied :P

Answer 17

Then I got \[x = 7 \pm \sqrt{49 + 24} / 2\]

Answer 18

Sorry I meant divided by lol

Answer 19

Okay good going :)

Answer 20

good

Answer 21

Then I got \[x = 7 \pm \sqrt{73} / 2\] and the sqaure root of 73 is 8.544

Answer 22

Then I got stuck because I don't know what to do now

Answer 23

would I do 7 + 8.544 then divide the whole thing by 2 then do the same thing but subtract instead of add ?

Answer 24

Well now you can distribute it