Question

without actually finifing f(3) find whether (x-3) is a factor of f(3) =x³+x²-2x+4 justify your answer

Answer 1

f(3)=3³+3²-2(3)+4
=34




x-3 is not a factor of given polynomial

Answer 2

heya here is your answer

x-3=0

x=0+3

x= 3

f(3)= x³+x²-2x+4

= (3)³+(3)²-2*3+4

= 27+ 9 +-6+4

= 34

∴(x-3) is not a factor

hope it helps

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