document.write( "Question 339132: (y-7)(4y +12)(y +13)=0
\n" ); document.write( " y-7 4y+12 y+13= 0
\n" ); document.write( "what do i do next, i'm having a tough time with trinomials? \n" ); document.write( "

Algebra.Com's Answer #243076 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
You are having a tough time!
\n" ); document.write( "When multiplying factors as given in this problem, you can't just put all the terms together as you did, that simply will not work!
\n" ); document.write( "Let's see how it goes:
\n" ); document.write( " $\"%28y-7%29%284y%2B12%29%28y%2B13%29\"$ You would multiply these three factors two-at-a-time.
\n" ); document.write( "Let's take the last two, using the FOIL method to multiply them:
\n" ); document.write( " $\"4y%2B12%29%28y%2B13%29+=+4y%5E2%2B52y%2B12y%2B156\"$ Simplify this a bit.
\n" ); document.write( " $\"4y%5E2%2B64y%2B156\"$ Now multiply this by the first term (y-7).
\n" ); document.write( " $\"%284y%5E2%2B64y%2B156%29%2A%28y-7%29+=+4y%5E3%2B64y%5E2%2B156y-28y%5E2-448y-1092\"$ Simplifying, we get:
\n" ); document.write( " $\"highlight%284y%5E3%2B36y%5E2-292y-1092%29\"$ \n" ); document.write( "

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