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burhan101Best ResponseYou've already chosen the best response.0
\[\huge y=x^39x^2+15x+4\]
 10 months ago

burhan101Best ResponseYou've already chosen the best response.0
this is unfactorable?
 10 months ago

SmoothMathBest ResponseYou've already chosen the best response.0
Any particular method they want you to use? Do they specify factoring?
 10 months ago

burhan101Best ResponseYou've already chosen the best response.0
No but isnt that the only way?
 10 months ago

SmoothMathBest ResponseYou've already chosen the best response.0
Graphing is the easiest.
 10 months ago

SmoothMathBest ResponseYou've already chosen the best response.0
Graph that bad boy. Look for where it crosses the x axis. Doneso.
 10 months ago

burhan101Best ResponseYou've already chosen the best response.0
no i have to use an algebraic method
 10 months ago

burhan101Best ResponseYou've already chosen the best response.0
because like say on an exam, i cant graph that
 10 months ago

MertsjBest ResponseYou've already chosen the best response.0
Possible rational roots are :
 10 months ago

SmoothMathBest ResponseYou've already chosen the best response.0
Okay then your best best is to use the rational root theorem to list possible rational roots. Then check each one to see if it is a valid root.
 10 months ago

MertsjBest ResponseYou've already chosen the best response.0
Use synthetic division to see if any of those are actual roots.
 10 months ago

SmoothMathBest ResponseYou've already chosen the best response.0
Mertsj is correct. The way he got those possible roots is: A: Make a list of factors for the last number (In this case, it's 4) B: Make a list of factors for the first coefficient (In this case, it's 1) Possible rational roots must be of the form \(\huge \frac{\text{things in the first list}}{\text{things in the second list}}\)
 10 months ago

MertsjBest ResponseYou've already chosen the best response.0
So the best approach would be to find where y changes sign. Then you would know there is a root between those two values and you could hone in on it by trial and error. Of if you know calculus, you could use the derivative. What class is this for?
 10 months ago

oldrin.batakuBest ResponseYou've already chosen the best response.0
they want you to bruteforce using newton's more than likely
 10 months ago
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