x^2+18x+45
x^2+18x+45
1*45= 45
(3+15= 18)
x^2+3x+15x+45
x(x^2/x + 3x/x)+
3*5(3*5x/3*5 + 3^2*5/3*5)
(x+3)(x+15)
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x^2+18x+45
1*45= 45
(3+15= 18)
x^2+3x+15x+45
x(x^2/x + 3x/x)+
3*5(3*5x/3*5 + 3^2*5/3*5)
(x+3)(x+15)
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