document.write( "Question 618969: what is Value of x; when x3-x=990 \n" ); document.write( "
Algebra.Com's Answer #389239 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi,
\n" ); document.write( "what is Value of x
\n" ); document.write( "x^3-x=990
\n" ); document.write( "x^3-x -990 = 0 Note: \"x+=+10\" is one solution 1000-10 -990 = 0
\n" ); document.write( "Using synthetic division
\n" ); document.write( " 10 1 0 -1 -990
\n" ); document.write( " 10 100 990
\n" ); document.write( " 1 10 99 0
\n" ); document.write( "(x-10)(x^2 + 10x + 99)
\n" ); document.write( "(x^2 + 10x + 99)
\n" ); document.write( "\"x+=+%28-10+%2B-+sqrt%28+100-396%29%29%2F%282%29+\"
\n" ); document.write( "\"x+=+%28-10+%2B-+sqrt%28+296%29%29%2F%282%29+\"
\n" ); document.write( "\"x+=+%28-10+%2B-+2sqrt%28+74%29%29%2F%282%29+\"
\n" ); document.write( "\"x+=+-5+%2B-+8.6023+\"
\n" ); document.write( " ONe real solution, x = 10 and two imaginary solutions \n" ); document.write( "
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