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Sed (CoderLovesEggs) Paper 1 with Solutions · Q1

Paper 1Functions & graphs

The full range of values of xx for which

x3−2x2−x+2>0x^3-2x^2-x+2>0

is:

Ax<−1x<-1 or 1<x<21<x<2;
B−2<x<−1-2<x<-1 or x>2x>2;
C−1<x<1-1<x<1 or x>2x>2;
D−1<x<2-1<x<2;
E−1−174<x<−1+174\dfrac{-1-\sqrt{17}}4<x<\dfrac{-1+\sqrt{17}}4;
Fx<−1−174x<\dfrac{-1-\sqrt{17}}4 or x>−1+174x>\dfrac{-1+\sqrt{17}}4.

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