document.write( "Question 877608: if f(x)=4-x^2 and g(x)=1-x, find f[g(-2)] \n" ); document.write( "
Algebra.Com's Answer #529437 by jim_thompson5910(35256)\"\" \"About 
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\"g%28x%29+=+1+-+x\"\r
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\n" ); document.write( "\n" ); document.write( "\"g%28-2%29+=+1+-+%28-2%29\" Replace x with -2\r
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\n" ); document.write( "\n" ); document.write( "\"g%28-2%29+=+1+%2B+2\"\r
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\n" ); document.write( "\n" ); document.write( "\"g%28-2%29+=+3\"\r
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\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=+4+-+x%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\"f%28g%28x%29%29+=+4+-+%28g%28x%29%29%5E2\" Replace x with g(x)\r
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\n" ); document.write( "\n" ); document.write( "\"f%28g%28-2%29%29+=+4+-+%28g%28-2%29%29%5E2\" Replace x with -2\r
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\n" ); document.write( "\n" ); document.write( "\"f%28g%28-2%29%29+=+4+-+%283%29%5E2\" Then plug in \"g%28-2%29+=+3\" (we computed this earlier above).\r
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\n" ); document.write( "\n" ); document.write( "\"f%28g%28-2%29%29+=+4+-+9\"\r
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\n" ); document.write( "\n" ); document.write( "\"f%28g%28-2%29%29+=+-5\"
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