document.write( "Question 733954: X to the third power plus 16x = 0. Solve. We are using factoring and i don't understand this problem. \n" ); document.write( "
Algebra.Com's Answer #448736 by ankor@dixie-net.com(22740)\"\" \"About 
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X to the third power plus 16x = 0. Solve.
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\n" ); document.write( "x^3 + 16x = 0
\n" ); document.write( "Factor out x
\n" ); document.write( "x(x^2 + 16) = 0
\n" ); document.write( "only one real solution
\n" ); document.write( "x = 0
\n" ); document.write( "but also
\n" ); document.write( "x^2 = -16
\n" ); document.write( "x = +/-\"sqrt%28-16%29\"
\n" ); document.write( "using i, the square root of -1
\n" ); document.write( "x = +/-4i
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