Can you please explain how to do factorisation.... its urgent i have my exam on 21st september
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Its very easy.. Take an example we have equation: ax^2+bx+c= 0
U have to first multiply coefficient of x^2 and x^0 ( number at last without x)
Means a*c....
Now u have to think two numbers whose sum or difference is = b (with sign) and whose multiplication is = a*c ....
For example: x^-5x+6=0
=> we are having a= 1,b=-5,c=6,
Now we have to take two numbers whose sum or difference is -5 and whose product is 6..
This is the only thin u have to think
Here we can take -2 and -3 bcz -2+(-3)= -5 and -2*-3= 6
=> x^2-5x+6 can be written as
=> x^2-3x-2x+6
= x(x-3)-2(x-3)
= (x-3)(x-2)
These are two factors
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