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September 16, 2014

September 16, 2014

Posted by **John** on Thursday, April 22, 2010 at 11:07pm.

12-2(3y-2)(3y+2)-(2y+5)(2y+5)

Textbook Answer: -22y^2-20y-5

I don't know how to get that. Can someone show me the step by step process?

thank you very much.

- Math (URGENT) -
**jen**, Thursday, April 22, 2010 at 11:50pm12-2(9y^2-4)-(4y^2+20y+25)

12-18y^2+8-4y^2-20y-25

combine like terms

-22y^2-20Y-5

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