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ZombieSushi

  • 4 years ago

[9.06] Using graphing technology, approximate where the graph of y = 3x2 − 11x − 5 crosses the x-axis.

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  1. ZombieSushi
    • 4 years ago
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    Oh yeah, I forgot to mention that there are 2 intercepts as it is a Parabola for a Quadractic Equation.

  2. eseidl
    • 4 years ago
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    http://www.wolframalpha.com/input/?i=y+%3D+3x2+ −+11x+−+5+ Here is your graph. We want to look at the x values when y=0 (there are two of them).

  3. anonymous
    • 4 years ago
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    here is a nice picture with 'graphing technology' http://www.wolframalpha.com/input/?i=y+%3D+3x2+%E2%88%92+11x+%E2%88%92+5+

  4. ZombieSushi
    • 4 years ago
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    Thank you both. :)

  5. anonymous
    • 4 years ago
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    yw. why you are not just supposed to use the quadratic formula and get exact answers is not clear

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