Foundation November 2021 Paper 3 Q17
17
(a) Expand \(\quad y(y + 5)\) (1)
(b) Factorise \(\quad 4a - 6\) (1)
(c) Solve \(\quad 2(5x - 4) = 21\) (3)
(d) Simplify \(\quad 4e^2f \times 5ef^3\) (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| \(y^2 + 5y\) | B1 | cao |
| Answer | Mark | Mark scheme |
|---|---|---|
| \(2(2a - 3)\) | B1 | cao |
| Answer | Mark | Mark scheme |
|---|---|---|
| 2.9 | M1 | for a correct first stage eg expanding the brackets, \(2 \times 5x - 2 \times 4\ (= 10x - 8)\) or division of both sides by 2, eg \(\dfrac{2(5x - 4)}{2} = \dfrac{21}{2}\) |
| M1 | for isolating terms in \(x\) eg \(10x = 21 + 8\) | |
| A1 | oe |
| Answer | Mark | Mark scheme |
|---|---|---|
| \(20e^3f^4\) | M1 | for any two of \(4 \times 5\ (= 20)\), \(e^{2+1}\ (= e^3)\), \(f^{1+3}\ (= f^4)\) in a product or written as individual terms |
| A1 | cao |
Additional guidance
Do not award if there is contradiction