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anonymous

  • one year ago

2x^2-7x-13=-10 solve graphically show steps

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  1. jim_thompson5910
    • one year ago
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    First add 10 to both sides 2x^2-7x-13=-10 2x^2-7x-13+10=-10+10 2x^2-7x-3=0

  2. jim_thompson5910
    • one year ago
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    Now graph 2x^2-7x-3 on graph paper or on a graphing calculator. A graphing calculator is much more accurate so I'd use that.

  3. jim_thompson5910
    • one year ago
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    If you don't have a graphing calculator, you can use something like desmos https://www.desmos.com/calculator

  4. anonymous
    • one year ago
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    can i use mathway for the calculature?

  5. jim_thompson5910
    • one year ago
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    what's the link?

  6. anonymous
    • one year ago
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    mathway.com

  7. anonymous
    • one year ago
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    i can just use the one u gave me

  8. jim_thompson5910
    • one year ago
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    I don't see how to graph with mathway, so yeah, use desmos

  9. jim_thompson5910
    • one year ago
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    graph 2x^2-7x-3 look for the x-intercepts

  10. anonymous
    • one year ago
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    0,-3 ?

  11. jim_thompson5910
    • one year ago
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    that's the y-intercept

  12. jim_thompson5910
    • one year ago
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    the x-intercepts are the points where the graph crosses the x axis

  13. anonymous
    • one year ago
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    oh read it wrong

  14. anonymous
    • one year ago
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    -0.39, 0 and 3.89

  15. jim_thompson5910
    • one year ago
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    I'm getting -0.386 and 3.886

  16. jim_thompson5910
    • one year ago
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    but it looks like you got roughly the same

  17. anonymous
    • one year ago
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    is that the answers or another step

  18. jim_thompson5910
    • one year ago
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    those are the two solutions

  19. jim_thompson5910
    • one year ago
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    approximate solutions

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