22 December 2015

• curprev 01:0001:00, 22 December 2015 Vmath215 talk contribs 789 bytes −12 →Solution
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13 March 2015

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3 October 2014

• curprev 05:1805:18, 3 October 2014 Timneh talk contribs 531 bytes +531 Created page with "== Problem == If, in the expression <math> x^2 \minus{} 3</math>, <math> x</math> increases or decreases by a positive amount of <math> a</math>, the expression changes by an am..."