document.write( "Question 44105: can someone help me factor these problems? Thanks.\r
\n" ); document.write( "\n" ); document.write( "1.4r^3-4\r
\n" ); document.write( "\n" ); document.write( "2.(21-7t)+(3r-rt)\r
\n" ); document.write( "\n" ); document.write( "3.x^3+64y^3\r
\n" ); document.write( "\n" ); document.write( "4.(x^3+7x^2)(-4x-28)
\n" ); document.write( "

Algebra.Com's Answer #29118 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
1.4r^3-4
\n" ); document.write( "=4(r^3-1)
\n" ); document.write( "=4(r-1)(r^2+r+1)\r
\n" ); document.write( "\n" ); document.write( "2.(21-7t)+(3r-rt)
\n" ); document.write( "=7(3-t)+r(3-t)
\n" ); document.write( "(3-t)(7+r)
\n" ); document.write( "
\n" ); document.write( "3.x^3+64y^3
\n" ); document.write( "=(x+4y)(x^2+4xy+16y^2)
\n" ); document.write( "
\n" ); document.write( "4.(x^3+7x^2)+(-4x-28)
\n" ); document.write( "=(x^2)(x+7)-4(x+7)
\n" ); document.write( "=(x+7))(x^2-4)
\n" ); document.write( "=(x+7)(x-2)(x+2)\r
\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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