SOLUTION: Use the intermediate value theorem to find the real zero of the given polynomial correct to two decimal places. f(x)=x^3+5x-5

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Question 857269: Use the intermediate value theorem to find the real zero of the given polynomial correct to two decimal places. f(x)=x^3+5x-5
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
f%280%29=-5
f%281%29=1%2B5-5=1
So somewhere between x=0 and x=1, the function crosses the x-axis (has a zero).
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graph%28300%2C300%2C-2%2C5%2C-2%2C5%2Cx%5E3%2B5x-5%29
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f%280.8%29=-0.488
f%280.9%29=0.229
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f%280.85%29=-0.136
f%280.87%29=0.0085
So split the difference.
x=0.86