Checking a cubic at a divisor zero
Checking a cubic at a divisor zero
5 marks
TGM Original
Use polynomial division to write P(x)=x3+2x2+5 as (x+1)Q(x)+R, where R is constant. Hence find P(-1).
Solution:
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Answer:\(\mathrm{Q}(x)=x^2+x-1,\ R=6,\ \mathrm{P}(-1)=6\).
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