Maths · Chapter 23

Algebra PYQs

A small set of identities, read the right way, turns most SSC algebra questions into two-line work.

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Algebraic expressions: operations, expansion and substitution 5 PYQs

Square identities with two variables: sum, difference and product 5 PYQs

Difference of squares: a² − b² = (a + b)(a − b) 4 PYQs

Cube identities: (a ± b)³ and a³ ± b³ 3 PYQs

The x + 1/x family I: squares, fourth powers and x − 1/x 5 PYQs