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25x2+30x+9 25*9=225 15*15=225 15+15=30

25x2+15x+15x+9

[5*5xx 3*5x] [3*5x 3*3]

5x(5x+3)+3(5x+3)

(5x+3)(5x+3)

Answer: (5x+3)2

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14y ago

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