Question 3b Polynomials (1 Viewer)

[superbird]

I was stumped here...mainly cause i didnt study polynomials
how did everybody go about solving this?

 

[Rorix]

sub x=-1, x=3....evaluate a,b
then the remainder is ax + (a+b)

 

[Sweet_Lemon]

oh i just left it with a(x+1)+b...ekekek

 

[becany]

i figured what a and b were...but what was the remainder when u divided it by x+1 and x-3??? i knew that i shoulda known cos i remember doing something similar before..but i just completely blanked out...and i still havent been unblanked..hehe

 

[littlemic21]

i got 3x - 8 for the remainder?

 

[jiaezangel_1004]

i think i got 3x-8 as well. i can't really remember

 

[becany]

isnt the remainder meant to be a whole number?..i worked out the 3x - 8 bit...but i thought u could eliminate the x?