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the lenght of ladder is contant. when it is in the middle of sliding, it make a right angle triangle with the floor and wall, hence (the lenght of the ladder£^2 equal to (the lenght of floor to one end of th...

A function is a notion somewhat abstract to the non-experienced reader, but can be explained as follows: You have a domain - that is a set, e.g. the set of all yellow birds. You also have a magic box with no...

Take the example 2x 2 + 7x + 3 = 0 1. To factorise we need to use the general equation 'ax + bx - c = 0' where in our case a = 2 b =7 c=3. 2. First we need to mulitply the a and c values (2 3 = 6) where we h...