Question

Using graphing technology, approximate the solutions of 0.25x2 − 0.46x − 3.1 = 0.

x ≈ −2.72 and x ≈ 4.56
x ≈ −3.14 and x ≈ 4.24
x ≈ −2.88 and x ≈ 4.33
x ≈ −2.61 and x ≈ 4.84

Answer 1

First one

Answer 2

first option are the roots

Answer 3

ok, how did you do that?

Answer 4

graphing technology

http://www.wolframalpha.com/input/?i=0.25x2+%E2%88%92+0.46x+%E2%88%92+3.1+%3D+0

Answer 5

oohh...

Answer 6

Or you can use a regular graphing calculator

Answer 7

You know, for tests and stuff

Answer 8

The first Mathematica plot shows the problem expression from x=-3 through x=5. The second plot of the expression is from x=4.4 through x=4.6 and is of the required granularity to verify the positive root.