Question 0118

Equations and Inequalities
2018 Paper 1 Question 4 Variant

Question

(i)
Find the exact roots of the equation
∣x2−x−5∣=5−x|x^2 - x - 5| = 5 - x
[4]
(ii)
On the same axes, sketch the curves with equations y=∣x2−x−5∣{y=|x^2 - x - 5|} and y=5−x.{y=5 - x.}
Hence solve the inequality
∣x2−x−5∣>5−x.|x^2 - x - 5| > 5 - x.
[4]

Answer