02-S2-Q2 Read more about 02-S2-Q2 Substitution, quartic, quadratic equations, algebra, C1. [STEP II 2002 Question 2 (Pure)]
90-S2-Q1 Read more about 90-S2-Q1 Algebra, roots of equations, ineqlaity, non-negative, C1. [STEP II 1990 Question 1 (Pure)]
