ofree18 Group Title identify the solutions to the equation 3x^2-4x=-2 when you solve by using the quadratic formula 2 years ago 2 years ago

1. Mertsj

First add 2 to both sides so you can have the equation in the correct form.

2. Mertsj

Then you will see that a = 3, b = -4 and c = 2

3. Mertsj

Now plug those values into the quadratic formula.

4. ofree18

which is?

5. Mertsj

$x=\frac{-b \pm \sqrt{b ^{2}-4ac}}{2a}$

6. ofree18

the options look like this

7. ofree18

|dw:1327793835199:dw|

8. BlingBlong

No real solutions to your probelm

9. BlingBlong

thus just write that unless your teacher specified that he wants you to answer in imaginary numbers

10. ofree18

no it is one of those answers

11. ofree18

yes it can be imaginary

12. myininaya

$x=\frac{-(-4) \pm \sqrt{(-4)^2-4(3)(2)}}{2(3)}$

13. myininaya

same thing as before simplify

14. ofree18

what do i do with the squareroot of-8?

15. myininaya

$\sqrt{-8}=i \sqrt{8}= i \sqrt{4} \sqrt{2} =i (2) \sqrt{2}=2 i \sqrt{2}$