3x^2 - x - 2 = 0.my homework wants me to solve this quadratic equation and show all the work

x = 1, -2/3

Step-by-step explanation:

1.

Use the Quadratic Formula.

-b ± √b^2 - 4(ac)

over 2a.

2.

Substitute a = 3, b = -1, and c = -2

1 ± √(-1)^2 - 4((3)(-2))

over 2(3)

3.

Simplify.

x = 1 ± 5 / 6

4.

Answer.

x = 1, -2/3

c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.

a

step-by-step explanation:

the answer is a