#polynomial
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elfin creek
Did you try synthetic division?
gentle kelp
no i have not i was wondering if that would be the correct way
elfin creek
no i have not i was wondering if that would be the correct way
...okay, let's just think about it. What does it mean if a is a root of a polynomial?
elfin creek
u can sub it into the equation to get P(a) = 0
Okay. So do that with -1.
elfin creek
i got 4x^2-12x+d
...what do you mean, you "got" that? you still have xs. All your xs should be -1s. And you don't have a c.
Like, show the work you did to "get" that.
elfin creek
...okay, so show that.
gentle kelp
elfin creek
...why doesn't the third column add to c + 12?
gentle kelp
in order to get that last column to equal 0 the previous will have to be d. Because u will have to multiply d by -1 to get -d and get rid of d
elfin creek
in order to get that last column to equal 0 the previous will have to be d. Beca...
...okay, it kind of feels like you jumped ahead a step.
Like, the procedurally appropriate way to do this would be to do the synthetic division normally, then note that the remainder, d - c - 12, must equal 0.
gentle kelp
Like, the procedurally appropriate way to do this would be to do the synthetic d...
oh okay