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Question

Factorise :

(i) 12x+15           (ii) 14m-21            (iii) 9n-12n2


Solution

(i)12x+15=3(4x+5)      {HCF of 12 and 15=3}(ii)14m21=7(2m3)      {HCF of 14 and 21=7}(iii)9n12n2=3n(34n)  Ans.                                         {HCF of 9 and 12=3}


Mathematics
Secondary School Mathematics VIII
Standard VIII

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