94-S3-Q2 Read more about 94-S3-Q2 Substitution, algebra, quartic equations, C1. [STEP III 1994 Question 2 (Pure)]
88-S2-Q3 Read more about 88-S2-Q3 Quadratic equation, roots (complex), cubic equation, real, C1. [STEP II 1988 Question 3 (Pure)]
