Question 275887
2b^2 +3b -10
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b^2 -2b -8
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b^2 -2b -8
=(b-4)(b+2) so b can't equal 4 or -2 or there will be division by zero which is not allowed.
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Ed
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{{{graph(500,500,-10,10,-10,10,(2x^2+3x-10)/(x^2-2x-8))}}}