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April 24, 2014

April 24, 2014

Posted by **Justwannapass** on Friday, August 14, 2009 at 9:42am.

3x^2+17xy+20y^2

- Algebra -
**bobpursley**, Friday, August 14, 2009 at 9:45amI know if I multiply 5x4 I get 20, and that 3x4 + 5 is 17.

- Algebra -
**drwls**, Friday, August 14, 2009 at 10:26am(x + 4y)(_x + 5y)

Fill the blank with the only number that works.

Note the _x^2 must equal 3x^2, and (as BobPurley has stated) 5 + 4*3 = 17

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