Using graphing technology, approximate the solutions of 0.72x2-0.18-6.3=0

Question

anonymous · Answer

Are you sure you plugged in the values correctly? My calculator seems to match up with the answer given on wolframalpha.

asnaseer · Answer

you need to plot the curve:$$y=0.72x2-0.18x-6.3$$and see where it crosses the x-axes.
the points where it crosses the x-axes will be the solutions to the equation:$$0.72x2-0.18x-6.3=0$$

anonymous · Answer

i got some answers and none were right

asnaseer · Answer

what answers did you get?

anonymous · Answer

x= 1.59 and x= -1.34

asnaseer · Answer

that would indicate that you haven't drawn the curve correctly. look at how wolfram has drawn it and compare it with your graph to see where you may have made a mistake: http://www.wolframalpha.com/input/?i=0.72x^2%E2%88%920.18x%E2%88%926.3