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CLASS X:Mathmatics

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CBSE Papers : How to Pass The Mathematics of class Xth

Tuesday, December 18th, 2007

Hi,
students of Class Xth of CBSE Board
While every person is different, many people have trouble with mathematics due to the misconception that it is somewhat dry and useless in every day life. In fact, math is the glue to the universe and our existance. Here is a nice quote by Paul Erdos; “Why are numbers […]

CBSE Papers : Learn Basic Formulas of Algebra for Math Preparation

Wednesday, November 14th, 2007

Factors and expansions
(a, b real; n positive integer) 
(a ± b)² = a² ± 2ab + b²
(a ± b)³ = a³ ± 3a²b + 3ab² ± b³
(a ± b)4 = a4 ± 4a³b + 6a²b² ± 4ab³ + b4
a² - b² = (a - b)(a + b)
a² + b² = (a - bi)(a + bi)
a³ […]

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