Question 0118

Equations and Inequalities
2018 Paper 1 Question 4 Variant

Question

(i)
Find the exact roots of the equation
x2+8x8=83x|x^2 + 8 x - 8| = 8 - 3 x
[4]
(ii)
On the same axes, sketch the curves with equations y=x2+8x8{y=|x^2 + 8 x - 8|} and y=83x.{y=8 - 3 x.}
Hence solve the inequality
x2+8x8<83x.|x^2 + 8 x - 8| < 8 - 3 x.
[4]

Answer