Foundation June 2025 Paper 3 Q21
21
(a) Simplify \(y^{10} \div y^2\) (1)
(b) Simplify \((e^3)^2\) (1)
(c) Expand \(x(3x^2 + 5)\) (1)
(d) Expand and simplify \((n + 5)(n - 2)\) (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| \(y^8\) | B1 | cao |
| Answer | Mark | Mark scheme |
|---|---|---|
| \(e^6\) | B1 | cao |
| Answer | Mark | Mark scheme |
|---|---|---|
| \(3x^3 + 5x\) | B1 | cao |
| Answer | Mark | Mark scheme |
|---|---|---|
| \(n^2 + 3n - 10\) | M1 | for 3 out of no more than 4 terms correct with correct signs or 4 correct terms ignoring signs |
| A1 | cao |
Additional guidance
\(n^2 - 2n + 5n - 10\)
NB: \(n^2 + 3n\) or \(3n - 10\) implies 3 correct terms