1. zzr0ck3r

you can complete the square or use the quadratic formula

2. zzr0ck3r

do you know how to do either?

3. anonymous

Yeah let me try the quadratic formula and see if i get the right answer

4. anonymous

Yeah...idk how to do it.

5. zzr0ck3r

$$ax^2+bx+c=0 \iff x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$$ for you $a=-12 \\ b=11\\c=-3$

6. anonymous

Yeah i got that ..but the answer choices have the letter i in them and idk where the i comes from

7. anonymous

oh that is complex numbers used when you get negative square root

8. anonymous

Would the answer be -11 plus or negative i×square root of 15 over 12?

9. anonymous

I meant square root of 23 over 24

10. anonymous

basically $i = \sqrt{-1}$

11. anonymous

$e.g.\sqrt{-11}=\sqrt{11}i$

12. anonymous

I understand thank you!

13. anonymous

no worries :)