document.write( "Question 965270: for f(x)=4x and g(x)=^4-8, find each of the following
\n" ); document.write( "a. (g*f)(-2)
\n" ); document.write( "b. (f*g)(2)
\n" ); document.write( "c. (g*f)(x) simplify
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Algebra.Com's Answer #590000 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\"f%28x%29=4x\" and \"g%28x%29=x%5E4-8\"\r
\n" ); document.write( "\n" ); document.write( "a. \"%28g%2Af%29%28-2%29\"\r
\n" ); document.write( "\n" ); document.write( "since \"%28f%2Ag%29%28x%29=f%28x%29%2Ag%28x%29\", you are multiplying the functions: \r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%28-2%29=4x%2A%28x%5E4-8%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%28-2%29=4x%5E5-32x%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%28-2%29=4%28-2%29%5E5-32%28-2%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%28-2%29=4%28-32%29%2B64\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%28-2%29=-128%2B64\"\r
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\n" ); document.write( "\n" ); document.write( "b. \"%28f%2Ag%29%282%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%282%29=4x%2A%28x%5E4-8%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%282%29=4x%5E5-32x%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%282%29=4%282%29%5E5-32%28-2%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%282%29=4%2832%29%2B64\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%282%29=128%2B64\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%282%29=192\"\r
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\n" ); document.write( "\n" ); document.write( "c. \"%28g%2Af%29%28x%29\" simplify\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%28x%29=4x%2A%28x%5E4-8%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28f%2Ag%29%28x%29=4x%5E5-32x%29\"\r
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\n" ); document.write( "\n" ); document.write( "d. \"%28f%2Ag%29%28x%29\"=> will be same as c. by commutative property of multiplication\r
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