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vinrarBest ResponseYou've already chosen the best response.1
simplify the equation into its factors one factor being x1 and find other factors then write down the domain of the factors, and you'll see the range is positive in certain domain that's the answer
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.2
factorise it and find zeros and use tabe
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.2
table method not tabe
 one year ago

strawberry_militiaBest ResponseYou've already chosen the best response.0
@sauravshakya what is the table method?
 one year ago

amistre64Best ResponseYou've already chosen the best response.0
table method: sit down at the table with pencil and paper :)
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.2
I will do for easy one ok suppose dw:1344005362435:dw
 one year ago

nickhouraneyBest ResponseYou've already chosen the best response.0
can you find the zeros then use synthetic division to reduce it to a smaller factor?
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.2
here dw:1344005426187:dw
 one year ago

amistre64Best ResponseYou've already chosen the best response.0
can you use calculus?
 one year ago

amistre64Best ResponseYou've already chosen the best response.0
x^4 + .... has the shapedw:1344005576425:dw knowing the min and max parts would be useful
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.2
dw:1344005474076:dw now using table dw:1344005508829:dw
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.2
so from the table we getdw:1344005614786:dw
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.2
got it @strawberry_militia
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.2
use this similar method to solve your question @strawberry_militia
 one year ago

amistre64Best ResponseYou've already chosen the best response.0
well, a quick trial and error gives me one zero: f(0) = 6 f(1) = 0
 one year ago

amistre64Best ResponseYou've already chosen the best response.0
that should reduce it to a cubic
 one year ago

strawberry_militiaBest ResponseYou've already chosen the best response.0
I have found the factors.
 one year ago

amistre64Best ResponseYou've already chosen the best response.0
then plot them on a number line and take test point between the zeros to determine signage
 one year ago

vinrarBest ResponseYou've already chosen the best response.1
write down the factors in coordinates form like if the four factors are a,b,c,d and a<b<c<d then write it as (infinity,a) (a,b) (b,c) and (c,d)
 one year ago

amistre64Best ResponseYou've already chosen the best response.0
to inf and +inf should be positive just by the nature of the poly
 one year ago

vinrarBest ResponseYou've already chosen the best response.1
and (d,infinity) then substitute a value in between (infinity ,a) and check it is positive or not similiarly do for (a,b) (b,c) and (c,d) and (d,infinity)
 one year ago

vinrarBest ResponseYou've already chosen the best response.1
so when you get a positive value..that is your required range
 one year ago

strawberry_militiaBest ResponseYou've already chosen the best response.0
I will try it out. thanks for all your responses.
 one year ago
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