document.write( "Question 117134: If f(x)=3x 2nd power+2, then what is f(a+b)? \n" ); document.write( "
Algebra.Com's Answer #86189 by MathLover1(20855)\"\" \"About 
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If \"f%28x%29=3x+%5E2%2B2\", then what is \"f+%28a%2Bb%29+\"?\r
\n" ); document.write( "\n" ); document.write( "Substitute \"x\" with \"a%2Bb\":\r
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\n" ); document.write( "\n" ); document.write( "\"f%28a%2Bb%29=3%28a%2Bb%29%5E2%2B2\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28a%2Bb%29=3%28a%5E2+%2B+2ab+%2Bb%5E2%29%2B2\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28a%2Bb%29=3a%5E2+%2B+6ab+%2B+3b%5E2+%2B+2\"
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\n" ); document.write( "\"f%28a%2Bb%29=3%28a%5E2+%2B+b%5E2+%29+%2B+2%283ab+%2B+1%29\"
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