factorise the following expression 25m square +30m +9

1.	factorise the following expression 25m square +30m +9
Answer» 25m^2+(15m+15m)+9 =05m (5m+3)+3(5m+3)=05m+3=0,5m+3=0m=3/5,m=3/5 25m^2 +30m + 9=25m^2 +15m + 15 m +9=5m(5m + 3) +3 (5m+3)=(5m+3)(5m+3)???????

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