document.write( "Question 478804: Consider f(x)=x^2+99x+18. find the value of x so that f(2x)=2f(x). \n" ); document.write( "
Algebra.Com's Answer #328088 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" );
document.write( "Hi,
\n" );
document.write( "finding the value of x so that f(2x)=2f(x).
\n" );
document.write( "f(x)=x^2+99x+18
\n" );
document.write( "    (2x)^2 + 99(2x) + 18 = 2x^2 + 198x + 36
\n" );
document.write( "     4x^2 + 198x + 18 = 2x^2 + 198x + 36
\n" );
document.write( "             2x^2  - 18 = 0
\n" );
document.write( "             x^2 = 9
\n" );
document.write( "             x = ± 3 \n" );
document.write( "
\n" );