Find the greatest common factor (GCF/HCF) of the following polynomials:
(i)`7x` , `21 x^2` and `14 x y^2` (ii) `42 x^2y z` and `63 x^3y^2z^3`

Explanation

Given:

`(i) 7x , 21 x^2a n d\ 14 x y^2`

`=>7xxx`

`=>21 x^2=7xx3xx(x^2)`

`=>14 x y^2=7xx2xx(x)xxy^2`

Greatest common factor

`=> 7x`

(ii) `42 x^2y z\ a n d\ 63 x^3y^2z^3`

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