document.write( "Question 395054: evaluate the function f(x)=x2+9x+6 at the given value of the independent variable and simplify \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "a. f(-7) b. f(x+8) c. f(-x)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I know the a. answer is -8 but I need to know how they came up with that answer
\n" ); document.write( "f(-7)= -8
\n" ); document.write( "

Algebra.Com's Answer #280434 by richard1234(7193)\"\" \"About 
You can put this solution on YOUR website!
Just replace each value into x:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "a: (-7)^2 + 9(-7) + 6
\n" ); document.write( "b: (x+8)^2 + 9(x+8) + 6
\n" ); document.write( "c: (-x)^2 + 9(-x) + 6\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "After that you should be able to simplify the expressions.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );