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\[\huge y=x^3-9x^2+15x+4\]

this is unfactorable?

oh no wait nevermind

Any particular method they want you to use? Do they specify factoring?

No but isnt that the only way?

Graphing is the easiest.

Graph that bad boy. Look for where it crosses the x axis. Doneso.

no i have to use an algebraic method

because like say on an exam, i cant graph that

Possible rational roots are :

\[\pm1,\pm4,\pm2\]

Use synthetic division to see if any of those are actual roots.

It is not factorable.

they want you to bruteforce using newton's more than likely