Foundation November 2019 Paper 2 Q16

(a)

Question 1

Simplify.   \(2a \times a \times a\)

Martina’s answer    \(4a\)

Martina’s error is ..................

Correct answer = .................. [2]

(b)

Question 2

Simplify.   \(\dfrac{x^{10}}{x^2}\)

Martina’s answer    \(x^5\)

Martina’s error is ..................

Correct answer = .................. [2]

(c)

Question 3

\(s = ut + \tfrac{1}{2}at^2\)

Find \(s\) when \(u = 0\), \(t = 5\) and \(a = 6\).

Martina’s solution    \(s = 0 \times 5 + \tfrac{1}{2} \times 6 \times 5^2\)
\(s = 0 + 15^2\)
\(s = 225\)

Martina’s error is ..................

Correct answer = .................. [2]