Solve the following quadratic equation using the quadratic formula and then choose the correct solution set.

6x^2 - 7x + 2 = 0

a) {-1/2,2/3}
b) {1/2,2/3}
c) {1/2,3/2}

Question

Solve the following quadratic equation using the quadratic formula and then choose the correct solution set. 

6x^2 - 7x + 2 = 0

a) {-1/2,2/3}
b) {1/2,2/3}
c) {1/2,3/2}

mertsj · Answer

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

mertsj · Answer

In your problem, a = 6, b = -7, c = 2

hero · Answer

I don't know why they ask to solve by quad formula when it is already factorable. That sort of defeats the purpose.

anonymous · Answer

I keep getting weird answers

anonymous · Answer

is it b?

mertsj · Answer

Post your work and I will trouble shoot it.

mertsj · Answer

Yes.  It is b

mertsj · Answer

Good job.

anonymous · Answer

aright thanks. sry I didn't know how to type my work out

mertsj · Answer

np

hero · Answer

You can also factor it

6x^2 - 7x + 2 = 0
6x^2 - 4x - 3x + 2 = 0
2x(3x - 2) - 1(3x - 2) = 0
(3x - 2)(2x - 1) = 0

3x - 2 = 0
2x - 1 = 0

x = 2/3
x = 1/2

For your purposes, however, quad formula might be easier for you.