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Mathematics 11 Online
OpenStudy (anonymous):

Use the intermediate value to show that the polynomial function has a zero in the given interval. f(x)=4^3+5x^2-9x+5;[-8,-1] Find the value of f(-8)

ganeshie8 (ganeshie8):

find f(-8) and f(-1)

ganeshie8 (ganeshie8):

if you get opposite signs, then the function crosses x axis, thus having a zero in between the given interval

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