O-LevelMathematicsAlgebra and graphs4024/21 · Oct/Nov 2025 · Q187 Marks
Write as a single fraction in its simplest form.
- (a)(2x/3y) ÷ (8x/9)[3]
- (b)(2x²+15x-50) / (4x²-25)[4]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2025). The mark or mark type is shown in brackets.
- 18(a) 3/4y final answer [3] M2 for any 2 of the 3 correct elements in the final answer eg 3x / 4xy' 9 / 12y' 27 / 4 or M1 for (2x/3y) × (9/8x) or for (18x / 24xy) or better
- 18(b) (x+10) / (2x+5) final answer [4] B2 for (2x - 5)(x + 10) or M1 for 2x(x + 10) – 5(x + 10) or x(2x - 5) + 10(2x - 5) or (2x + a)(x + b) where ab = -50 or 2b + a = 15 B1 for (2x - 5)(2x + 5)
Write your answer and get it marked
On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.
Sign up free →