document.write( "Question 150839: f(x) = -3x^2 + x, x = -5 \n" ); document.write( "

Algebra.Com's Answer #110793 by nerdybill(7384) $\"\"$ $\"About$

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f(x) = -3x^2 + x, x = -5
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\n" ); document.write( "They want to know the value of the function f(x) when x = -5
\n" ); document.write( "So, simply substitute the -5 for the 'x' and solve:
\n" ); document.write( "f(-5) = -3(-5)^2 + (-5)
\n" ); document.write( "f(-5) = -3(25) + (-5)
\n" ); document.write( "f(-5) = -75 - 5
\n" ); document.write( "f(-5) = -80\r
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