Modulus Functions - Solving Equations (Edexcel A-Level Mathematics): Quizzes

Non-negative value

$-x$

$x = 4$ and $x = -4$

Different cases

$x = 4$ and $x = -1$

$2x - 3 = 5$

Two solutions

$x = -4$

It contradicts $x \geq 1$

Reject it