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It is divisible by 2, which is the first prime number.If you want to factor it, you can start by taking out a factor pair of (2 x 5) for every zero it has at the end.
To factor 196, start with any of its factor pairs and then keep factoring the composite numbers until all are prime. 2 x 98 2 x 2 x 49 2 x 2 x 7 x 7 = 196
x-a is a factor of the polynomial p(x),if p(a)=0.also,if x-a is a factor of p(x), p(a)=0.
(903,3)(387,7)(301,9)(129,21)(63,43)
You would factor it this way: 2 x 2 x 7 x m x m.