Specimen 2020 Paper 2 Q8
8
(a) Work out \(\quad \dfrac{ab}{cd} \div \dfrac{bc}{ad}\)
Give your answer as a single fraction in its simplest form. [2 marks]
(b) Work out \(\quad \dfrac{7}{2x^2} + \dfrac{4}{3x}\)
Give your answer as a single fraction in its simplest form. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(\dfrac{ab}{cd} \times \dfrac{ad}{bc}\) | M1 | oe |
| \(\dfrac{a^2}{c^2}\) | A1 |
| Answer | Mark | Comments |
|---|---|---|
| Common denominator with at least one numerator correct | M1 | eg \(\dfrac{21}{6x^2} + \dfrac{8x}{6x^2}\) or \(\dfrac{21x}{6x^3} + \dfrac{8x^2}{6x^3}\) |
| \(\dfrac{21 + 8x}{6x^2}\) | A1 |