Higher November 2018 Paper 1 Q10
10
(a) Simplify \(\dfrac{x - 1}{5(x - 1)^2}\) (1)
(b) Factorise fully \(50 - 2y^2\) (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| \(\dfrac{1}{5(x-1)}\) | B1 | for \(\dfrac{1}{5(x-1)}\) or \(\dfrac{1}{5x-5}\) |
| Answer | Mark | Mark scheme |
|---|---|---|
| \(2(5 + y)(5 - y)\) | M1 | for partial factorisation, eg \(2(25 - y^2)\) oe or \((10 + 2y)(5 - y)\) oe or \((5 + y)(10 - 2y)\) oe or \(-2(y^2 - 25)\) oe |
| A1 | for \(2(5 + y)(5 - y)\) or \(-2(5 + y)(y - 5)\) |