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Monday, September 14, 2015

Factorize

Problem:

3x2+14x+40

Solution:

The function cannot be factorized. We can do completing the square

3x2+14x+40=3(x2+143x)+40=3(x2+273x)+40=3(x2+273x+499499)+40=3(x2+273x+499)493+40=3(x+73)2493+1203=3(x+73)2+713

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