O-LevelMathematicsAlgebra and graphs4024/11 · May/June 2021 · Q83 Marks
Simplify 6x+15-2x+8.
- (a)Simplify 6x+15-2x+8.[1]
- (b)Expand and simplify (x-5)².[2]
Mark scheme
Marking points from the official mark scheme (May/June 2021). The mark or mark type is shown in brackets.
- [1] (a) 4x + 23 final answer
- [2] (b) x² - 10x + 25 final answer
- M1 for x² - 5x - 5x + 25 or three of these terms correct
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