document.write( "Question 283359: If x^2 = 3x + 4, then x^5 is equal to:\r
\n" ); document.write( "\n" ); document.write( "(A) 3x + 4 (B) 13x + 12 (C) 51x + 52 (D) 205x + 204 (E) 819x + 820
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Algebra.Com's Answer #205731 by nabla(475)\"\" \"About 
You can put this solution on YOUR website!
You solve this by substituting x^2 into the expansion of x^5.
\n" ); document.write( "\"x%5E2=3x%2B4\"
\n" ); document.write( "\"x%5E5=x%2Ax%5E2%2Ax%5E2\"
\n" ); document.write( " ---> \"x%5E5=x%283x%2B4%29%283x%2B4%29\"
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "D is indeed the answer, but I hope you now see how to do it.
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