Solve the following quadratic equation using the quadratic formula and then choose the correct solution set. 6x^2 - 7x + 2 = 0

Question

Solve the following quadratic equation using the quadratic formula and then choose the correct solution set.   6x^2 - 7x + 2 = 0

directrix · Answer

First, we need to know the QF (quadratic formula).

anonymous · Answer

That is $$X=-b \pm \sqrt{b ^{2}-4ac}$$

directrix · Answer

That is correct if you place it over (2a).
I have the formula attached.
For  6x^2 - 7x + 2 = 0.
what are the values of a, b, and c?

anonymous · Answer

A=6
B=7
C=2

directrix · Answer

Attached is how I set up QF problems to avoid sign problems.

directrix · Answer

A=6
B=7 -----------> This should be -7
C=2

anonymous · Answer

so its set up like this 
$$-7\pm \sqrt{-7-4*6*2}$$

directrix · Answer

Here's what I have so far.

anonymous · Answer

its that right

directrix · Answer

I don't think so.

anonymous · Answer

ya me too

directrix · Answer

Under the radical, the b has to be squared: (-7)^2 = 49

directrix · Answer

I am writing the substitutions for a, b, and c, on the attached files. Have you seen my work?

anonymous · Answer

ya

directrix · Answer

Look at this:

directrix · Answer

I think your formula was off a bit. Then, the substitution for a, b, and c was off.
Writing all the steps takes time but I recommend it if you are having trouble with the problem.

directrix · Answer

@Shannon20150 

We left off with x = 8/12 and x = 6/12. Those values will simplify to what?

directrix · Answer

8/12 = 2/?   and 6/12 = 1/?