Question 19
HardOriginal questionSimplify .
Show the answer and explanation
CorrectNot quiteAnswer D
Correct answer: D
Explanation
Numerator: and , so .
Denominator: and , so .
Value .
Worth noting
Forgetting the in the numerator gives ; working the numerator left to right gives 9 and .
- Concept
- BODMAS applied separately to numerator and denominator
- Typical timeTypical
- 100 s
- Your timeYours
- —
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