Using graphing technology, approximate the solutions of 0.91x2 − 0.54x − 4.9 = 0.

x ≈ −2.32 and x ≈ 2.56

x ≈ −2.14 and x ≈ 2.44

x ≈ −2.18 and x ≈ 2.53

x ≈ −2.04 and x ≈ 2.64

Question

Using graphing technology, approximate the solutions of 0.91x2 − 0.54x − 4.9 = 0.

x ≈ −2.32 and x ≈ 2.56

x ≈ −2.14 and x ≈ 2.44

x ≈ −2.18 and x ≈ 2.53

x ≈ −2.04 and x ≈ 2.64

anonymous · Answer

What kind of graphing calculator do you have?  I use a TI-83

anonymous · Answer

An expandable PDF plot from Mathematica 8 Home Edition is attached.

anonymous · Answer

free for all http://www.wolframalpha.com/input/?i=0.91x^2+%E2%88%92+0.54x+%E2%88%92+4.9+%3D+0

anonymous · Answer

From the problem of the text the student is supposed to eye ball a plot and estimate the roots.  There is no doubt that WolframAlpha.com provides a lot of bang for the buck.