O-LevelMathematicsAlgebra and graphs4024/11 · Oct/Nov 2021 · Q235 Marks
Expand and simplify. (x+5)(x-2)
- (a)Expand and simplify. (x+5)(x-2)[2]
- (b)Write as a single fraction in its simplest form. 3/(x-4) + 2/(x+5)[3]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2021). The mark or mark type is shown in brackets.
- 23(a) x²+3x-10 final answer [2] B1 for 3 terms out of x² + 5x - 2x - 10 soi
- 23(b) (5x+7)/((x+5)(x-4)) or (5x+7)/(x²+x-20) final answer [3] B1 for 3(x + 5) + 2(x - 4) oe isw B1 for denominator (x + 5)(x - 4) oe isw
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