Easy -1.2 This is a straightforward completing the square exercise with a non-unit coefficient. It requires routine algebraic manipulation (factoring out 3, completing the square, simplifying) with no problem-solving or conceptual insight needed. Standard textbook question worth 3 marks, easier than average A-level content.
Obtain a correct unsimplified version of the x or x2 term of the expansion of
1
( )− 1 3 − 2
4−3x 2 or 1− x
Answer
Marks
4
M1
State correct first term 2
B1
3 27
Obtain the next two terms x+ x2
Answer
Marks
Guidance
4 64
A1 + A1
Total:
4
Question
Answer
Marks
Question 1:
1 | Obtain a correct unsimplified version of the x or x2 term of the expansion of
1
( )− 1 3 − 2
4−3x 2 or 1− x
4 | M1
State correct first term 2 | B1
3 27
Obtain the next two terms x+ x2
4 64 | A1 + A1
Total: | 4
Question | Answer | Marks