document.write( "Question 328: Hi I'm an older student and I have a problem I don't understand. How would you solve polynomials by factoring? This is the problem: 2x^4=16x^2. Thank You \n" ); document.write( "
Algebra.Com's Answer #151 by AnlytcPhil(1810)\"\" \"About 
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Hi I'm an older student and I have a problem I don't\r\n" );
document.write( "understand. How would you solve polynomials by factoring?\r\n" );
document.write( "This is the problem: 2x^4=16x^2. Thank You\r\n" );
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document.write( "                  2x4 = 16x2 \r\n" );
document.write( "First observe that both sides can be divided by 2. So we\r\n" );
document.write( "can make it simpler by dividing both sides by 2\r\n" );
document.write( "                   x4 = 8x2\r\n" );
document.write( "Get zero on the right side:\r\n" );
document.write( "            x4 - 8x2 = 0\r\n" );
document.write( "Factor out x2 on the left side:\r\n" );
document.write( "           x2(x2 - 8) = 0\r\n" );
document.write( "Set each of these factor = 0 separately and solve:\r\n" );
document.write( "Setting first factor = 0\r\n" );
document.write( "                    x2 = 0\r\n" );
document.write( "                    x = 0\r\n" );
document.write( "Setting second factor = 0\r\n" );
document.write( "               x2 - 8 = 0\r\n" );
document.write( "                   x2 = 8\r\n" );
document.write( "Take square roots of both sides

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