4MA0 Higher June 2013 Paper 3 Q14
14
(a) Simplify \(4p^3q^5 \times 6p^2q\) (2)
(b) Simplify \((5x^2y^4)^3\) (2)
(c) Factorise \(9a^2 - b^2\) (2)
| Scheme | Marks |
|---|---|
| \(24p^5q^6\) | B2 |
| (2) |
Notes
B2: B1 for 2 of 24, \(p^5\), \(q^6\) correct in a single product with no additional terms or \(24p^{3+2}q^{5+1}\)
| Scheme | Marks |
|---|---|
| \(125x^6y^{12}\) | B2 |
| (2) |
Notes
B2: B1 for 2 of 125, \(x^6\), \(y^{12}\) correct in a single product with no additional terms or \(125x^{2\times3}y^{4\times3}\)
| Scheme | Marks |
|---|---|
| \((3a + b)(3a - b)\) | B2 |
| (2) |
Notes
B2: B1 for \((3a + b)(3a + b)\) or \((3a + b)^2\) or \((3a - b)(3a - b)\) or \((3a - b)^2\)