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OpenStudy (ray1998):
Find the real solutions of the equation by graphing. -19x^3 - 12x^2 + 16x = 0 A. -1.29 B. -1.29, 0.65 C. 0, 1.29, -0.65 D. 0, -1.29, 0.65 Fan and medal will be given :) thank you in advance!
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OpenStudy (bahrom7893):
Look at the first plot, the solutions are wherever the graph crosses the x axis.
OpenStudy (ray1998):
Okay, thank you!
OpenStudy (welshfella):
www.desmos.com is also a useful graphics tool
OpenStudy (ray1998):
I know :) I actually use both Desmos and Wolframalpha @welshfella
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OpenStudy (welshfella):
0 is one obvious solution because x is a common factor in each term
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