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( x – 4)(2x2 + 4) + ( x + 4)(x3 – 1) – ( x2 – x – 1)
\n" ); document.write( "{( x – 4)(2x2 + 4)} + {( x + 4)(x3 – 1)} {– ( x2 – x – 1) }\r
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\n" ); document.write( "\n" ); document.write( "First, simplify the last of these 3 sections so we don't forget that the minus sign applies to all 3 of the last terms and that if we are subtracting a negative x, it is really adding x.\r
\n" ); document.write( "\n" ); document.write( "( x – 4)(2x^2 + 4) + ( x + 4)(x^3 – 1) – x^2 + x + 1\r
\n" ); document.write( "\n" ); document.write( "Then multiply each term in the binomials by the other terms. Watch the signs.\r
\n" ); document.write( "\n" ); document.write( "x*2x^2 + x*4 -4*2x^2 -4*4 + x*x^3 - x*1 + 4*x^3 – 4*1 – x^2 + x + 1
\n" ); document.write( "2x^3 + 4x - 8x^2 - 16 + x^4 - x + 4x^3 – 4 – x^2 + x + 1\r
\n" ); document.write( "\n" ); document.write( "Reorganizing the terms:
\n" ); document.write( "x^4 + 2x^3 + 4x^3 - 8x^2 – x^2 + 4x - x + x - 16 + 1– 4\r
\n" ); document.write( "\n" ); document.write( "Now, combine like terms:
\n" ); document.write( "x^4 + 6x^3 - 9x^2 + 4x - 19 \r
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