Find w(-3) using synthetic substitution:
w(x)=11x^3-6x^2+2

I got -241, can someone confirm if this is correct?

Question

Find w(-3) using synthetic substitution:
w(x)=11x^3-6x^2+2

I got -241, can someone confirm if this is correct?

tkhunny · Answer

Don't think so.  Did you use the weird, missing 2rd term, 0x?

anonymous · Answer

Oh, i dont think so! I did:

w(-3)=11(-3)^3-6(-3)^2+2
11(-27)-6(-9)+2
-297+54+2
-297+56=-241 @tkhunny

anonymous · Answer

so how would I do it with what you said?

anonymous · Answer

11(-3)^3-6(-3)^2+2 
11(-27)-6(-9)+2
can you see how the -9 is close but a bit off? (-3)^2 = (-3)*(-3)= ?

anonymous · Answer

OH it should have been positive 9!

anonymous · Answer

^_^

anonymous · Answer

so then really it should be 11(-27)-6(9)+2? @DemolisionWolf

anonymous · Answer

yep! @ali1029

anonymous · Answer

so it would be -349?

anonymous · Answer

you got it ^_^

anonymous · Answer

thank you so much :) where would I be without you?!

anonymous · Answer

haha, some one would show up and just tell you the Answer, i'm sure of it

anonymous · Answer

haha, well it is definitely better being told how to solve the problem and getting my answer confirmed :p

tkhunny · Answer

That's just substitution, not "synthetic substitution".