A-LevelMathematicsAlgebra9709/33 · Oct/Nov 2019 · Q14 Marks
Solve the inequality 2|x + 2| > |3x – 1|.
- Solve the inequality 2|x + 2| > |3x – 1|.[4]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2019). The mark or mark type is shown in brackets.
- [B1] State or imply non-modular inequality (x+2)² >(3x−1)², or corresponding quadratic equation, or pair of linear equations 2(x + 2) = ± (3x – 1)
- [M1] Make reasonable attempt at solving a 3-term quadratic, or solve two linear equations for x
- [A1] Obtain critical values x = 3/5 and x = 5
- [A1] State final answer 3/5 < x < 5
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