Foundation June 2022 Paper 3 Q12
12
(a) Simplify fully \(\quad 9x + y - 6x + y\) [2 marks]
(b) Here are two expressions.
| \(8a\) | \(a^2 - b\) |
When \(\quad a = 25 \quad\) the expressions have the same value.
Work out the value of \(b\). [3 marks]
(c) Simplify \(\quad \dfrac{6w + 10}{2}\)
Circle your answer. [1 mark]
- \(6w + 8\)
- \(3w + 10\)
- \(6w + 5\)
- \(3w + 5\)
| Answer | Mark | Comments |
|---|---|---|
| \(3x + 2y\) | B2 | either order B1 \(3x\) or \(2y\) |
Additional guidance
| Further incorrect work after a B2 response is B1 | |
| eg \(3x + 2y\) followed by \(5xy\) | B1 |
| Further incorrect work after a B1 response is B1 | |
| eg \(15x + 2y\) followed by \(30xy\) | B1 |
| Answer | Mark | Comments |
|---|---|---|
| \(8 \times 25\) or 200 or \(25^2\) or 625 | M1 | oe |
| \(8 \times 25\) or 200 and \(25^2 - b\) or \(625 - b\) or \(25^2 - 8 \times 25\) or \(625 - 200\) | M1dep | oe may be seen in an equation |
| 425 | A1 |
Additional guidance
| Embedded answer | M1M1A0 |
| Answer | Mark | Comments |
|---|---|---|
| \(3w + 5\) | B1 |