Question 467861
 List the potential rational zeros of the following function. Please explain.
f(x)=x³+2x²-9x-18
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factors of a0=18: ±1, ±2, ±3, ±6, ±9, ±18
factors of a3=1: ±1
Possible rational roots (a0/a3): ±1, ±2, ±3, ±6, ±9, ±18
a0=the last term
a3=coefficient of lead term