Mathematics · May / June 2026 · Paper 21 · Question 26

− 11 7 2 cao [3]

B2 for 11 3 2 5 8 + − OR + − − × −

M1 for 15 3 2 5 8 2 8 oe with 11 or 7 2 each count as two terms correct at least three terms correct. = =

M1 for 8 2 2 soi e.g. 5 8 10 2

[k =] 1.9 oe [4]

B3 for 19 oe

B3 for answer 1.9 5 2 5

or M3 for 7 5 12 5 or better for M3, e.g. 7 + 2 + oe rational 6 = 5k 10 10 common denominator OR 49

B1 for 20 or better Note: the root symbol should extend below the fraction line. 7 7 or better for B1 e.g. , 2 5 20 ( )( ) 7 12 7 and 12

M1 for oe common oe e.g. , 7 12 + = k 5 2 5 and 2 5 2 5 20 20 denominator (not rational) or 7 5 6 5 oe e.g. 7 5 6 20 and oe rational denominator and 10 5 10 10