1MA0 Higher June 2017 Paper 2 Q8
8
(a) Simplify \(ab - 5g + 5ab - 2g\) (2)
(b) Factorise \(6m - 9\) (1)
(c) Simplify \(t^8 \div t^3\) (1)
(d) Factorise fully \(2x^2y + 4xy^2\) (2)
(e) Expand and simplify \((w - 5)^2\) (2)
| Answer | Mark | Notes |
|---|---|---|
| \(6ab - 7g\) | 2 | M1 for \(6ab\) or \(-7g\) A1 cao |
| Answer | Mark | Notes |
|---|---|---|
| \(3(2m - 3)\) | 1 | B1 cao |
| Answer | Mark | Notes |
|---|---|---|
| \(t^5\) | 1 | B1 cao |
| Answer | Mark | Notes |
|---|---|---|
| \(2xy(x + 2y)\) | 2 | B2 cao (B1 for \(xy(2x + 4y)\) or \(2x(xy + 2y^2)\) or \(2y(x^2 + 2xy)\) or \(2xy(\ldots)\) where \((\ldots)\) has two terms one of which is correct) |
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(w^2 - 5w - 5w + 25\) | \(w^2 - 10w + 25\) | 2 | M1 for all 4 terms (and no additional terms) correct with or without signs or 3 out of no more than 4 terms correct with signs A1 cao |