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Find the greatest common factor (GCF/HCF...

Find the greatest common factor (GCF/HCF) of the following polynomials: `4a^2b^3,-12 a^3b, 18 a^4b^3` (ii) `6x^2y^2,9x y^3,3x^3y^2`

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Given:
`(i) 4a^2b^3,-12 a^3 18 a^4b^3`
`=> HCF of 4,12,18=2`
`=> HCF of a^2,a^3,a^4=a^2`
`=> HCF of b^3,b,b^3=b`
`=>HCF=2a^2b`
(ii) `6x^2y^2,9x y^3,3x^3y^2`
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